MSNBC's Nicolle Wallace tramples Trump's biggest border wall lie: 'If he had public support, he'd have a bill!'
MSNBC's Nicolle Wallace joins Rachel Maddw to discuss Donald Trump's border wall address. Image via screengrab.

MSNBC host Nicolle Wallace joined the prime-time crew Tuesday night to add commentary to President Donald Trump's Oval Office address -- and pointed out the biggest of his lies.

"Here's the deal: he doesn't have public support," Wallace told fellow MSNBC hosts Rachel Maddow and Chris Hayes. "What he had a candidate, was at the base of the Republican-supported strain of fear-mongering about illegal immigration."

"If he had public support, he'd have a bill because members in Congress would support it," she added.

Wallace went on to note that when she worked for President George W. Bush, he addressed the nation in a similar fashion about immigration reform -- but that he had the support of both parties when doing so.

"This is a president with no bill and no Republicans on board and doesn't have the public," she said. "It boggles the mind."

Watch below: