(CNN) Republican Sen. Susan Collins, of Maine, is calling embattled EPA Administrator Scott Pruitt "the wrong person" to head the agency "on policy grounds alone."

Collins voted against Pruitt's confirmation, and said Sunday on CNN's "State of the Union" that his actions on the environment, "whether it's trying to undermine the Clean Power Plan or weaken the restrictions on lead or undermine the methane rules," validate her decision.

"This daily drop of accusations of excessive spending and ethical violations serve to further distract the agency from accomplishing its very important mission," Collins said. "I think Congress needs to do some oversight."

Republican Sen. John Kennedy, of Louisiana, echoed the point in remarks on CBS's "Face the Nation," in which he recounted some of Pruitt's alleged actions.

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