Coulter also called Trump "lazy and incompetent."
The DEA noted in October 2018 that most heroin is brought into the country at legal ports of entry.
"Walls are placed strategically, along with what the speaker talked about, better technology at ports of entry, more border control agents, more detention beds, drones," said Senator John Kennedy.
However, experts say the funding estimates are wildly off.
"It's probably easier to do if you leave it up to the [bipartisan committee] and let us do it," said GOP Senator Richard Shelby, a member of the congressional committee that's tasked with hashing out a border security deal.
President Donald Trump has repeatedly threatened to declare a national emergency in order to obtain funding for his wall.
"I was very disappointed in Paul because the wall was so desperately needed. And I'll get the wall," the president said.
"Now in any normal administration it would be insane to suggest...even joke about the president of the United States seeing stuff in a movie ... and maybe thinking it was real," MSNBC host Rachel Maddow said.
"I think the idea of a wall in and of itself is a symbol. It's not a real tool," former Department of Homeland Security Secretary Michael Chertoff told Newsweek.
"It's my great honor to accept," Trump said on Monday. "We have a great story to tell and yet, great goals to achieve!"
A pair of women married to U.S. Border Patrol agents sent a letter to House Speaker Nancy Pelosi, inviting her to visit the Texas border with Mexico and see it firsthand, then understand why her opposition to a barrier was misguided.
The president questioned how anybody could believe he wouldn't deliver his long-promised wall on the southern border.
Florida senator opposes declaring a national emergency.
A lawyer representing the fired undocumented workers said he wasn't "buying" that the Trump Organization was not previously aware of the employees' immigration status.
They "almost seem to have like a sexual fetish for a cement wall … a big beautiful erection of a wall," S.E. Cupp said, taking aim at Ann Coulter and others.
"We lost the election in November and now we've lost six weeks to get our strength back, to get our position back," GOP Representative Peter T. King of New York said.
"So let me get this straight, you were convinced Donald Trump was the guy, you voted for him…and now you're finding out he's a lying con man?" Maher asked his guest.
In a speech on Friday, the president said he will shut down the government again or declare a national emergency if a border wall deal isn't made by Feb. 15.