The Senate is expected to vote on final confirmation of Tom Perez to be the secretary of Labor Thursday afternoon and whether to end debate on Gina McCarthyRegina (Gina) McCarthyOvernight Regulation: Dems go on attack during EPA chief's hearing | Mnuchin promises more Russia sanctions | Regulators subpoena major bitcoin exchange | New lawsuit over FDA e-cig rule Overnight Energy: Dems go on attack at EPA chief's hearing | Pruitt backs national fuel standard | Bill Nye sparks controversy with State of the Union plans | Greens sue over wolf protections Dems go on the attack during EPA chief's hearing MORE’s nomination to lead the EPA shortly after that.

McConnell accused Perez of making “misleading” statements to Congress and an inspector general while running the Civil Rights Division of the Department of Justice.

“This is reflective of not some passionate left-winger … but a crusading ideologue who believes the law simply doesn’t apply to him,” McConnell said. “His ideological passion is what’s so troubling to me about Mr. Perez.”

Senate Majority Leader Harry ReidHarry Mason ReidTo end sugar subsidies, conservatives can't launch a frontal attack House presses Senate GOP on filibuster reform A pro-science approach to Yucca Mountain appropriations MORE (D-Nev.) defended Perez saying he has a “proven track record of public service.”

Republicans have objected to McCarthy not because she isn’t qualified, but because she would implement President Obama’s new regulation of carbon emissions from power plants. McCarthy currently serves as the EPA’s top air quality regulator.

“She’s overseen the implementation of numerous job-killing regulations,” McConnell said. “They’ve helped bring upon a depression.”

Reid argued she is a bipartisan choice because she formerly worked for then-Gov. Mitt Romney (R-Mass.).

Republicans agreed to hold an up-or-down vote on the nominees as part of a deal to avoid Senate rule changes limiting the minority's right to filibuster executive branch nominees.

Reid said he hoped the Senate would complete business on both nominations by the end of Thursday.