Protesters attending a Senate hearing Wednesday on the Environmental Protect Agency's (EPA) 2019 budget request held signs behind embattled EPA Administrator Scott Pruitt Edward (Scott) Scott PruittJuan Williams: Swamp creature at the White House Science protections must be enforceable Conspicuous by their absence from the Republican Convention MORE urging President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE to "fire him" over recent scandals.

Three protesters could be seen on C-SPAN cameras holding the signs early Wednesday morning behind Pruitt, coming in to view when he answered questions from senators about his spending at the top environmental watchdog agency.

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At some point, the protesters holding the signs appeared to walk out or removed the signs, as they could no longer be seen behind Pruitt minutes later into his testimony.

Pruitt has weathered a deluge of negative press coverage in recent weeks, including reports that he directed aides to come up with "official" reasons to travel to preferred travel destinations when he joined EPA and rented a condo from the wife of a top energy lobbyist.

Democrats have called on Trump to fire Pruitt over the scandals, which they have challenged run counter to Trump's campaign promise to "drain the swamp" of government corruption in Washington.

During Wednesday's hearing, Pruitt was lectured by Democrats, including Sen. Patrick Leahy Patrick Joseph LeahyBattle over timing complicates Democratic shutdown strategy Hillicon Valley: Russia 'amplifying' concerns around mail-in voting to undermine election | Facebook and Twitter take steps to limit Trump remarks on voting | Facebook to block political ads ahead of election Top Democrats press Trump to sanction Russian individuals over 2020 election interference efforts MORE (Vt.), about his spending habits at the EPA as lawmakers discussed the agency's 2019 budget request.

“Forget about your own ego and your first-class travel and your special phone booths and all these things that just make you a laughingstock, and your agency a laughingstock," Leahy told Pruitt.