Fox News host Tucker Carlson is calling out Texas Gov. Greg Abbott for failing to call National Guard troops to the southern border and refusing to come onto his program, one of the highest-rated in cable news television.

“We open the show with horrifying pictures of what’s happened at our southern border, which is completely open. And this country is being invaded; no, that’s not an overstatement. More than a million people this year, expected by the rest of the world. It’s been going on for months,” Carlson said in a monologue on Tuesday night’s show. “And we’ve asked Texas Gov. Greg Abbott many times to come on this show to explain why he hasn’t called the National Guard to seal the Texas border and protect the rest of us from this invasion. Greg Abbott has refused to come on [the show] repeatedly. So pretty soon, possibly tomorrow, we plan to invite his primary opponents on the show to describe what they would do if they ran Texas. That might be an interesting conversation.”

“We’d like to give Gov. Abbott one more chance to come on, sincerely. Please, come on and tell us how you plan to save the rest of us from what is happening in your state,” he added.

The comments come in light of thousands of aliens—many from Haiti—swarming an international bridge in Del Rio in an attempt to enter the United States. This event is just the latest development in a surge of illegal immigration that has swept the southern border since President Joe Biden took office in January. 

But while Abbott has taken some steps—such as surging officers from the Texas Department of Public Safety to the region—much of his response has pointed fingers at the federal government

Last week, Abbott said he would close six points of entry with Mexico, but he reversed his decision just hours later, blaming the Biden administration for not cooperating.

Since then, he has written a letter to President Joe Biden asking for a federal emergency declaration as a result of the crisis at the Texas-Mexico border, but that request has not been granted. 

Tuesday’s monologue is not the first time Carlson has expressed reservations about Abbott’s inaction in protecting the southern border. In May, during an interview with the Uvalde Mayor Don McLaughlin, Carlson said Abbott struck him as a “total fraud.”