Maryland Attorney General Brian Frosh, right, meets with Doug Emhoff, husband of Vice President Kamala Harris, at the Bread and Butter Kitchen, in Annapolis, Md., on Tuesday, May 18, 2021. (Paul W. Gillespie/The Baltimore Sun via AP)

Doug Emhoff, the husband of Vice President Kamala Harris, turns to look at Democratic congressional candidate Melanie Stansbury during a campaign rally in Albuquerque, New Mexico, on Thursday, May 27, 2021. The visit marked Emhoff's first such trip on behalf of a candidate. (AP Photo/Susan Montoya Bryan)

Doug Emhoff, husband of Vice President Kamala Harris, speaks during a roundtable discussion with local restaurant owners at the Annapolis Maritime Museum and Park, in Annapolis, Md., on Tuesday, May 18, 2021. (Paul W. Gillespie/The Baltimore Sun via AP)

Democratic congressional candidate Melanie Stansbury speaks to a crowd during a campaign rally in Albuquerque, New Mexico, on Thursday, May 27, 2021. She was joined by Doug Emhoff, the husband of Vice President Kamala Harris. The trip marked Emhoff's first on behalf of a candidate. (AP Photo/Susan Montoya Bryan)

Democratic congressional candidate Melanie Stansbury, center, takes photos with supporters during a campaign rally in Albuquerque, New Mexico, on Thursday, May 27, 2021. She was joined by Doug Emhoff, the husband of Vice President Kamala Harris. The trip marked Emhoff's first on behalf of a candidate. (AP Photo/Susan Montoya Bryan)

Democratic congressional candidate Melanie Stansbury speaks during a campaign rally in Albuquerque, New Mexico, on Thursday, May 27, 2021. She was joined by Doug Emhoff, the husband of Vice President Kamala Harris. The trip marked Emhoff's first on behalf of a candidate. (AP Photo/Susan Montoya Bryan)