Here we go again.

Donald Trump announced on Twitter that more U.S. troops are being deployed to the southern border, but argued that a border wall would be more effective in countering what he described as an “attempted Invasion of Illegals.”

“More troops being sent to the Southern Border to stop the attempted Invasion of Illegals, through large Caravans, into our Country. We have stopped the previous Caravans, and we will stop these also. With a Wall it would be soooo much easier and less expensive. Being Built!” Trump wrote in a tweet.

More troops being sent to the Southern Border to stop the attempted Invasion of Illegals, through large Caravans, into our Country. We have stopped the previous Caravans, and we will stop these also. With a Wall it would be soooo much easier and less expensive. Being Built!

— Donald J. Trump (@realDonaldTrump) January 31, 2019

There are already more than 2,000 active-duty troops at the U.S.-Mexico border. Those troops were deployed shortly before November’s midterm elections to counter what Trump claimed was a national security risk presented by Central American migrants seeking asylum in the U.S.

The number of active-duty troops at the border peaked at about 5,900 last year. The mission was originally slated to end in December but has since been twice extended, first to Jan. 31 and then to Sept. 30.

However, as NBC national security analyst Ken Dilanian pointed out, Trump’s leading intelligence officers appeared on Capitol Hill this week to talk about the country’s most critical national security issues, and the immigration crisis never came up.

Weird—I covered a “worldwide threats hearing” this week where all your top intelligence officials discussed the major security challenges facing the country, and they didn’t mention this. Not once. https://t.co/pgK9Gk91uu

— Ken Dilanian (@KenDilanianNBC) January 31, 2019

Granted, Trump might not think very highly of his intelligence chiefs these days, since he’s contradicting several of their most significant assessments and said they should to “go back to school.”