In a fiery post, Trump said, "Here we go again!" referring to the thousands of migrants, largely Hondurans, heading north through southern Mexico with plans to invade the US.

"Huge CARAVANS are forming and beginning their illegal march through Mexico," the president said.

He continued, "MEXICO MUST STOP THEM, NOW, and if they do not do so, the Tariffs on Mexico will be IMMEDIATELY DOUBLED."

The migrants' departure coincided with last week's Democratic victory in the US midterms and hopes that a more left-leaning Congress will allow them to flood the US, just like the open-border days under the Biden administration. Also, many of these migrants probably have high hopes of blue states welcoming them in and showering them with taxpayer money.

But on Wednesday, as the migrants tracked closer and closer to the border, Border Czar Tom Homan had a very unwelcoming message for the Democrats: "Congress may be more blue. Texas may be more blue. But the White House is red, bright red," adding, "We're going to keep that border secure."

The next flashpoint could be the US southern border.