MARC THIESSEN (FOX NEWS CONTRIBUTOR): [President Donald Trump] is very right to be frustrated. He's right to be frustrated with Mexico and the countries of Central America that are not doing enough to stop these migrants from coming across the border. And he's right to be frustrated with Democrats who are denying that there is a crisis at the border. There is a crisis at the border. They had 100,000 apprehensions in the southern border in March. I mean, the Border Patrol is completely overwhelmed.

And you've got Democrats like Julian Castro running around proposing to decriminalize illegal crossings into the country. I mean, the Democratic Party is moving in the direction of open borders and socialism. Open borders and socialism is a recipe for national disaster -- for a national suicide. So, anybody can come into the country and get free stuff. That's where the Democratic Party is heading. We all used to agree once that we needed to stop illegal immigration, and now the Democratic Party is increasingly in the side of open borders and letting anybody in. 

Related:

Dallas Morning News: Julian Castro crafts plan to grant citizenship path to millions of unauthorized immigrants

Previously:

Tucker Carlson: If the GOP agrees with Democrats on immigration reform, “the Republican Party is done... suicide”

Limbaugh: US should not “commit national suicide” by accepting immigrants, refugees to prove American values

Laura Ingraham and Pat Buchanan warn that immigration will change “the whole character and composition of the nation”