Trump has been whipping Senate Republicans to vote against his possible conviction 'for months': MSNBC's Nicolle Wallace
President Donald Trump's dispute with Democrats over border wall funding has led to the longest-ever US government shutdown. (AFP / Jim WATSON)

MSNBC's Nicolle Wallace on Tuesday suggested that there's been chatter from Capitol Hill about Donald Trump whipping Senate Republicans to vote against convicting him in the case of his impeachment.

While discussing Trump's border wall quagmire, Washington Post columnist Eugene Robinson noted that declaring a national emergency "is not gonna go over well with the Republican Senators [the president] really relies on."

"He needs those Republican Senators — may need them a whole lot at some point," Robinson said.

"For his conviction?" Wallace asked.

"That's what you'd really need Republican Senators for," the columnist quipped.

The host said that it's her understanding that "they've been whipping that vote for months to make sure there's no conviction, should he be impeached."

Watch the discussion below: