People may be up in arms about President Donald Trump's decision to leave the Paris climate agreement, but Jim Cramer sees one glaring problem.

"There's only so much any president can do unilaterally," the "Mad Money" host said. "While Trump supporters may cheer that he made good on a promise to pull out of the agreement, something he campaigned on, there's another part of his agenda that seems to have gone fallow that we care about here. Tax reform. It's fallen by the wayside because it requires the cooperation of Congress. And, at least right now, it almost feels like the White House has given up on Congress."