Democrats decry 'pandemic of pollution' under Trump's EPA
Andrew Wheeler, administrator of the Environmental Protection Agency, speaks during a Senate Environment and Public Works Committee oversight hearing to examine the Environmental Protection Agency, Wednesday, May 20, 2020 on Capitol Hill in Washington. (Kevin Dietsch/Pool via AP)

Andrew Wheeler, administrator of the Environmental Protection Agency, speaks during a Senate Environment and Public Works Committee oversight hearing to examine the Environmental Protection Agency, Wednesday, May 20, 2020 on Capitol Hill in Washington. (Kevin Dietsch/Pool via AP)

May. 20, 2020 11:25 AM EDT
Ranking member Sen. Tom Carper, D-Del., delivers opening remarks during a Senate Environment and Public Works Committee oversight hearing to examine the Environmental Protection Agency, Wednesday, May 20, 2020 on Capitol Hill in Washington. (Kevin Dietsch/Pool via AP)

Ranking member Sen. Tom Carper, D-Del., delivers opening remarks during a Senate Environment and Public Works Committee oversight hearing to examine the Environmental Protection Agency, Wednesday, May 20, 2020 on Capitol Hill in Washington. (Kevin Dietsch/Pool via AP)

May. 20, 2020 01:28 PM EDT
Chairman Sen. John Barrasso, R-Wy., speaks during a Senate Environment and Public Works Committee oversight hearing to examine the Environmental Protection Agency, Wednesday, May 20, 2020 on Capitol Hill in Washington. (Kevin Dietsch/Pool via AP)

Chairman Sen. John Barrasso, R-Wy., speaks during a Senate Environment and Public Works Committee oversight hearing to examine the Environmental Protection Agency, Wednesday, May 20, 2020 on Capitol Hill in Washington. (Kevin Dietsch/Pool via AP)

May. 20, 2020 11:12 AM EDT
Sen. Tammy Duckworth, D-IL, speaks virtually during a Senate Environment and Public Works Committee oversight hearing to examine the Environmental Protection Agency, Wednesday, May 20, 2020 on Capitol Hill in Washington, with Andrew Wheeler, administrator of the Environmental Protection Agency, left. (Kevin Dietsch/Pool via AP)

Sen. Tammy Duckworth, D-IL, speaks virtually during a Senate Environment and Public Works Committee oversight hearing to examine the Environmental Protection Agency, Wednesday, May 20, 2020 on Capitol Hill in Washington, with Andrew Wheeler, administrator of the Environmental Protection Agency, left. (Kevin Dietsch/Pool via AP)

May. 20, 2020 12:42 PM EDT
Andrew Wheeler, administrator of the Environmental Protection Agency, speaks during a Senate Environment and Public Works Committee oversight hearing to examine the Environmental Protection Agency, Wednesday, May 20, 2020 on Capitol Hill in Washington. (Kevin Dietsch/Pool via AP)

Andrew Wheeler, administrator of the Environmental Protection Agency, speaks during a Senate Environment and Public Works Committee oversight hearing to examine the Environmental Protection Agency, Wednesday, May 20, 2020 on Capitol Hill in Washington. (Kevin Dietsch/Pool via AP)

May. 20, 2020 11:31 AM EDT
Sen. Ed Markey, a D-Mass., speaks virtually during a Senate Environment and Public Works Committee oversight hearing to examine the Environmental Protection Agency, Wednesday, May 20, 2020 on Capitol Hill in Washington. (Al Drago/Pool via AP)

Sen. Ed Markey, a D-Mass., speaks virtually during a Senate Environment and Public Works Committee oversight hearing to examine the Environmental Protection Agency, Wednesday, May 20, 2020 on Capitol Hill in Washington. (Al Drago/Pool via AP)

May. 20, 2020 01:15 PM EDT
EPA Administrator Andrew Wheeler, left, speaks with Sen. James Inhofe, R-Okla., before opening remarks during a Senate Environment and Public Works Committee oversight hearing to examine the Environmental Protection Agency, Wednesday, May 20, 2020 on Capitol Hill in Washington. (Kevin Dietsch/Pool via AP)

EPA Administrator Andrew Wheeler, left, speaks with Sen. James Inhofe, R-Okla., before opening remarks during a Senate Environment and Public Works Committee oversight hearing to examine the Environmental Protection Agency, Wednesday, May 20, 2020 on Capitol Hill in Washington. (Kevin Dietsch/Pool via AP)

May. 20, 2020 01:29 PM EDT
Andrew Wheeler, administrator of the Environmental Protection Agency, adjusts his mask at a hearing during a Senate Environment and Public Works Committee oversight hearing to examine the Environmental Protection Agency, Wednesday, May 20, 2020 on Capitol Hill in Washington. (Kevin Dietsch/Pool via AP)

Andrew Wheeler, administrator of the Environmental Protection Agency, adjusts his mask at a hearing during a Senate Environment and Public Works Committee oversight hearing to examine the Environmental Protection Agency, Wednesday, May 20, 2020 on Capitol Hill in Washington. (Kevin Dietsch/Pool via AP)

May. 20, 2020 01:28 PM EDT
Sen. Kirsten Gillibrand, D-N.Y., speaks virtually during a Senate Environment and Public Works Committee oversight hearing to examine the Environmental Protection Agency, Wednesday, May 20, 2020 on Capitol Hill in Washington, with Andrew Wheeler, administrator of the Environmental Protection Agency, left. (Kevin Dietsch/Pool via AP)

Sen. Kirsten Gillibrand, D-N.Y., speaks virtually during a Senate Environment and Public Works Committee oversight hearing to examine the Environmental Protection Agency, Wednesday, May 20, 2020 on Capitol Hill in Washington, with Andrew Wheeler, administrator of the Environmental Protection Agency, left. (Kevin Dietsch/Pool via AP)

May. 20, 2020 12:46 PM EDT