WATCH: Chuck Todd Roasts GOP Sen. Ron Johnson Over Devotion to Trump

In 2016, Vice President Joe Biden asked the Ukraine to remove prosecutor Viktor Shokin. The GOP has pointed out the move to remove the prosecutor as proof that the former Vice President was corrupt. Biden was joined in asking for the removal by Shokin by a number of lawmakers including Wisconsin’s Ron Johnson (R).

Photo by Justin Sullivan/Getty ImagesJohnson, who is an important surrogate to Donald Trump, claims that he has no recollection of signing the letter. During a Sunday appearance on NBC, host Chuck Todd blasted Johnson for his refusal to blame anyone but Trump for the current issues with the Ukraine.

Despite his 2016 protests, Johnson now currently spouts unverified claims about the Ukraine. He attempted to use some of these theories during his Sunday interview with Todd.

This theories led the host to ask the Wisconsin senator, “You’re blaming everybody else for the reason we’re in this situation, other than the president. Isn’t the president’s own behavior, which raised all of these yellow and red flags, isn’t is that why we’re here?”

Johnson answered the question by saying, “I’m sympathetic with President Trump as he has been tormented from the day after his election.”

The MSNBC host countered the Wisconsin senator by asking, “How should viewers not look at what you are doing here and you’re just reacting as a partisan that, if Trump were a Democrat, you’d be ready to convict him?”

Johnson simply replied by saying, “That was before an election.”

Watch a clip of the discussion below, courtesy of MSNBC: