In his Talking Points Memo tonight, Bill O'Reilly slammed the pro-illegal immigration lobby's objections to President Donald Trump's executive actions.

On Wednesday, Trump signed two executive orders that cover a range of immigration enforcement measures, including starting the wall on the southern border and threatening sanctuary cities with a cut-off of funding.

O'Reilly said that "all hell is breaking loose," as many on the left simply do not want U.S. immigration laws enforced.

He pointed out that whether they oppose immigration laws for humanitarian, personal or political reasons, the fact is that it's up to Congress to change existing laws.

"You apply to come to the U.S.A., and your application is either accepted or rejected. If you simply show up with no papers, you're violating U.S. law," O'Reilly said. "So, there really isn't any legal argument here. It's all about theory and politics."

He said that "irresponsible" politicians like Chicago Mayor Rahm Emanuel and New York City Mayor Bill de Blasio are ignoring federal law by operating sanctuary cities.

"So if these protesters and these loony mayors think that open borders and lax immigration enforcement are good things, they're idiots and deserve to be scorned," O'Reilly said.

"Breaking it down, sanctuary cities and counties promote anarchy. If the left doesn't like immigration law, petition Congress to change it. If the mayors refuse to obey federal law, President Trump should cut off federal funds immediately."

SNEAK PEEK: President Trump Sits Down with Hannity at White House

Trump Expected to Ban Syrian Refugees Indefinitely in New Exec. Orders

This 'Bad Lip Reading' of Trump's Inauguration Is Absolutely Hilarious