"The entire premise of a wall is not based in fact," Alexandria Ocasio-Cortez said.
House Speaker Nancy Pelosi said Democrats will fight President Donald Trump in Congress, the courts and the court of public opinion over his national emergency declaration for a border wall.
"There is simply not ample evidence to support the president's contention of a national security crisis at our southwestern border," Wisconsin Governor Tony Evers said.
Congress has "the power of the purse," the House speaker reminded European leaders during a visit to Brussels.
Despite those Republicans who disapprove and say this action should be brought before the courts, the vast majority of the party supports the president's emergency declaration.
Parents said they expected backlash but hoped people would have behaved a "little more respectful" towards their son.
"Contrary to the will of Congress, the president has used the pretext of a manufactured 'crisis' of unlawful immigration to declare a national emergency and redirect federal dollars," the lawsuit reads.
"How do we know Trump's telling the truth about all that new border wall he's already built?" Coulter tweeted sarcastically.
"I don't want this conversation to go down a rabbit hole right now," said presenter Ana Cabrera.
Republican Senator Lindsey Graham said that the kids would eventually get the school "but right now we've got a national emergency on our hands."
"This is the first time a president has tried to declare an emergency when Congress explicitly rejected funding for the particular project that the president is advocating," Schiff explained.
"Four times as many people were coming across the border in 2000 as now," the Fox News host said. "So why is that a national emergency?"
"Knock, knock Republicans, anybody home?" S.E. Cupp asked. "Any Republicans in Washington have a problem with this?"
Ocasio-Cortez and Joaquin Castro are planning to fight Trump's declaration.
"The goal is to get Trump's stupidest voters to say 'HE'S FIGHTING!'" Coulter tweeted. "No he's not."
President Donald Trump is set to declare a national emergency over the border issue and is looking for other sources of funding for a border wall.
President Donald Trump is set to grudgingly sign off on the budget deal agreed by Congress despite there being no money for the border wall as he envisions it.
The Democrat posted to Twitter, saying: "Trump's presidency is the real national emergency."
"There's no coming back from this. No "emergency" or presidential powers will allow him to build the wall, ever, after he signs this bill. Trump has just agreed to fully open borders," Coulter tweeted on Thursday afternoon.
Senate Majority Leader Mitch McConnell said he is prepared to support the emergency declaration, which flies in the face of his supposed private warning to President Donald Trump against taking such action.
The president's campaign manager, Brad Parscale, told Axios that roughly 50 percent of the 30,000 people who signed up for Monday's rally online were registered as Democrats.
The comedian blasted the president for flip-flopping over his flagship U.S.-Mexico border wall proposal.
Fox News host Sean Hannity and Fox Business Network host Lou Dobbs criticized the border wall deal made by congressional leaders as President Donald Trump weighs signing off on it.