Victor Hernandez, left, and Luis Martinez fill their water containers with a hose from a spigot in Haden Park, Thursday, Feb. 18, 2021 in Houston. Texas officials have ordered 7 million people to boil tap water before drinking it following days of record low temperatures that damaged infrastructure and froze pipes. (Brett Coomer/Houston Chronicle via AP)

Carlos Mandez waits in line to fill his propane tanks Wednesday, Feb. 17, 2021, in Houston. Customers had to wait over an hour in the freezing rain to fill their tanks. Millions in Texas still had no power after a historic snowfall and single-digit temperatures created a surge of demand for electricity to warm up homes unaccustomed to such extreme lows, buckling the state's power grid and causing widespread blackouts. (AP Photo/David J. Phillip)

After seeing a posting on Facebook, LaDonna (no last name given) drove from Johnson County, Texas to collect some of the dumpsters-full of ice cream thrown out at a supermarket, Wednesday, Feb. 17, 2021, in Arlington TX. LaDonna said she's collecting the frozen goods for her neighbors. Rolling power outages this week have forced businesses to clear merchandise that needs refrigeration. (Tom Fox/The Dallas Morning News via AP)

People wait in line to fill propane tanks Wednesday, Feb. 17, 2021, in Houston. Customers waited over an hour in the freezing rain to fill their tanks. Millions in Texas still had no power after a historic snowfall and single-digit temperatures created a surge of demand for electricity to warm up homes unaccustomed to such extreme lows, buckling the state's power grid and causing widespread blackouts. (AP Photo/David J. Phillip)

Mary Kay Hoffman holds a sign as she waits for the arrival of Sen. Ted Cruz, R-Texas, at the international arrivals terminal at George Bush Intercontinental Airport Thursday, Feb. 18, 2021, in Houston. Sen. Cruz has acknowledged that he traveled to Mexico for a family vacation this week as his home state was paralyzed by a deadly winter storm. In a statement Thursday, Cruz said he was returning to Texas. (AP Photo/David J. Phillip)

Octavio Jovellano works to turn off water in a building Thursday, Feb. 18, 2021, at the intersection of Lyons Avenue and Waco Street in Houston. Jovellano is a maintenance man at the building. He said his home does not have power and that his wife uses a CPAP, and he was unable to find a generator. (Jon Shapley/Houston Chronicle via AP)

A fox or small coyote crosses Plano Road between cars moving through the Spring Creek Nature Area as a second winter storm brought more snow and continued freezing temperatures to North Texas on Tuesday night, Feb. 16, 2021, in Richardson, Texas. (Smiley N. Pool/The Dallas Morning News via AP)

People line up to fill containers of various sizes from a spigot at Haden Park Thursday, Feb. 18, 2021 in Houston. Texas officials have ordered 7 million people to boil tap water before drinking it following days of record low temperatures that damaged infrastructure and froze pipes. (Brett Coomer/Houston Chronicle via AP)

James Anyaegvu, who lived in a home that burned, speaks with a fire fighter in Austin on Wednesday, Feb. 17, 2021. Austin Fire Department and ATCEMS responded to a house fire that killed two people and left several with critical and minor injuries. (Bronte Wittpenn/Austin American-Statesman via AP)

CORRECTS SPELLING OF LAST NAME TO MAMOU, NOT MAMU - Howard and Nena Mamou eat dinner at their home in the Glenwood neighborhood in Hutto, Texas, Tuesday, Feb 16, 2021. Anger over Texas’ power grid failing in the face of a record winter freeze mounted Tuesday as millions of residents in the energy capital of the U.S. remained shivering with no assurances that their electricity and heat — out for 36 hours or longer in many homes — would return soon or stay on once it finally does. (Ricardo B. Brazziell/Austin American-Statesman via AP)

CORRECTS SPELLING OF LAST NAME TO ARCHIBALD, NOT ARCHIBAD - Brett Archibald tries to entertain his family as they attempt to stay warm in their home the BlackHawk neighborhood in Pflugerville, Texas, Tuesday, Feb 16, 2021. Anger over Texas’ power grid failing in the face of a record winter freeze mounted Tuesday as millions of residents in the energy capital of the U.S. remained shivering with no assurances that their electricity and heat — out for 36 hours or longer in many homes — would return soon or stay on once it finally does. (Ricardo B. Brazziell/Austin American-Statesman via AP)

People line up to fill containers of various sizes from a spigot at Haden Park Thursday, Feb. 18, 2021 in Houston. Texas officials have ordered 7 million people to boil tap water before drinking it following days of record low temperatures that damaged infrastructure and froze pipes. (Brett Coomer/Houston Chronicle via AP)

A woman living on the streets uses blankets to keep warm, Thursday, Feb. 18, 2021, in downtown San Antonio. Snow, ice and sub-freezing weather continue to wreak havoc on the state's power grid and utilities. (AP Photo/Eric Gay)

A man seeking shelter from the cold embraces his dog Dittle D Bear while resting at a warming shelter, Tuesday, Feb. 16, 2021, in Odessa, Texas. The man who declined to give his real name was a traveler that arrived the night before and stated he was in Odessa this time last year. (Eli Hartman/Odessa American via AP)

Jorge Sanhueza-Lyon stands on his kitchen counter to warm his feet over his gas stove Tuesday, Feb. 16, 2021, in Austin, Texas. Power was out for thousands of central Texas residents after temperatures dropped into the single digits when a snow storm hit the area on Sunday night. (AP Photo/Ashley Landis)

Dori Ann Upchurch is helped by Austin Disaster Relief Network volunteer Cody Sandquist, left, and a Red Cross volunteer to a warming station at University Avenue Church of Christ in Austin, Texas, after being evacuated from her home on Wednesday Feb. 17, 2021. Nearly 3.4 million utility customers around the U.S. were still without power Wednesday in the aftermath of a winter storm that overwhelmed power grids unprepared for climate change, and another blast of snow and ice threatened to impede the efforts to restore service.(Jay Janner/Austin American-Statesman via AP)

A bluejay looks on as a competitor for food comes in for a landing on a hanging peanut wreath bird feeder on Wednesday, Feb. 17, 2021, on the south shore on Holmes Lake Park in Lincoln, Neb. After 10 days of frigid weather - including a period of below-zero high temperatures - the area is forecasted to receive a more reasonable climate heading into the next week and a half. (Francis Gardler/Lincoln Journal Star via AP)

A homeless man Tuesday, Feb. 16, 2021, sleeps at the Chicago Transit Authority's Clark & Dearborn bus station, the morning after a snowstorm dumped up to 18 inches in the greater Chicago area. (AP Photo/Charles Rex Arbogast)

A youngster leaps across a flooded intersection after several inches of wet snow and sleet fell on the area, Thursday, Feb. 18, 2021, in the Brooklyn borough of New York. (AP Photo/Kathy Willens)

This aerial photo shows the devastation Tuesday Feb. 16, 2021, in the Ocean Ridge Plantation area of Brunswick County, N.C. following a tornado. (Ken Blevins/The Star-News via AP)

People living on the streets use blankets to keep warm, Thursday, Feb. 18, 2021, in downtown San Antonio. Snow, ice and sub-freezing weather continue to wreak havoc on the state's power grid and utilities. (AP Photo/Eric Gay)

Michael Singletary rests behind a desk at a Gallery Furniture store which opened as a shelter for those without power Wednesday, Feb. 17, 2021, in Houston. Millions in Texas still had no power after a historic snowfall and single-digit temperatures created a surge of demand for electricity to warm up homes unaccustomed to such extreme lows, buckling the state's power grid and causing widespread blackouts. (AP Photo/David J. Phillip)

Children play with a sled as snow begins to accumulate, Thursday, Feb. 18, 2021, in San Antonio. Snow, ice and sub-freezing weather continue to wreak havoc on the state's power grid and utilities. (AP Photo/Eric Gay)

Dialina Gonzalez sleeps on a mattress inside a Gallery Furniture store which opened as a shelter Wednesday, Feb. 17, 2021, in Houston. Millions in Texas still had no power after a historic snowfall and single-digit temperatures created a surge of demand for electricity to warm up homes unaccustomed to such extreme lows, buckling the state's power grid and causing widespread blackouts. (AP Photo/David J. Phillip)

A woman living on the streets uses blankets to keep warm, Thursday, Feb. 18, 2021, in downtown San Antonio. Snow, ice and sub-freezing weather continue to wreak havoc on the state's power grid and utilities. (AP Photo/Eric Gay)

Two men climb over downed trees as they head out to retrieve gas for generators, Tuesday, Feb. 16, 2021, in Huntington, W.Va., following a winter weather system. (Sholten Singer/The Herald-Dispatch via AP)