Democrats are growing impatient about the conditions — not to mention, the politics — along the U.S.-Mexico border, and Homeland Security Secretary Alejandro Mayorkas could bear the brunt when he testifies in the House on Wednesday.

What we’re hearing: Rep. Bennie Thompson, chair of the Homeland Security Committee, may have a handful of pointed questions. Some Texas Democrats also remain peeved they didn’t get any warning a White House delegation would be visiting their state two weeks ago — aggravating potential allies.

To date, Republicans have led the criticism of the Biden administration, but that’s becoming politically untenable for the president’s own party.

“I think it’s safe to say Secretary Mayorkas’ concerning rhetoric on immigration and President Biden’s questionable decision to rescind successful programs and agreements will be hot-button issues,” Rep. Michael McCaul (R-Texas), a former chair of the committee, told Axios.