It will be one of his first appearances since Hillary announced her campaign.
But the likely presidential candidate said the U.S. is already reducing emissions.
Hillary Clinton is in a hurry to boost her appeal among liberals.
Nearly the entire field of GOP hopefuls will descend on the Granite State this weekend.
“The longer it takes to confirm her, the longer Eric Holder stays attorney general," he said.
The possible presidential contender suggested Clinton had flip-flopped on the issues.
Gary Gensler as CFTC chairman aggressively pushed to implement Dodd-Frank.
Clinton leads Walker 52 percent to 40 percent in a hypothetical 2016 matchup in Wisconsin.
"I would love them and support them, but I would not participate," he said.
The former Texas governor compared a trio of potential GOP rivals to President Obama in 2008.