Even by those standards his Thursday morning tweet storm - coming less than three weeks from midterm legislative elections where the Democrats may take the lower house from Trump's Republicans - was especially fierce.
President Trump said on Twitter that he will do everything in his power to put a stop to the caravan of thousands of migrants on their way to the Southern border, including using military power, if Mexico doesn't stop them. Trump in April authorized the National Guard to protect the border as a similar group of migrants headed up from Central America.
In another, he suggested that the "onslaught" of immigrants could threaten a recently announced reworked trade deal with Mexico and Canada, writing that immigration is "far more important to me, as President, than Trade".
The president's warning echoes an earlier tweet on Wednesday, in which he again blasted Democrats for refusing to approve tighter border control and immigration laws.
As with a similar march in April, organizers of the march claim they will claim refugee status when they reach the USA border with Mexico.More news: Authorities release names of missing teen's deceased parents
"We have today informed the countries of Honduras, Guatemala and El Salvador that if they allow their citizens, or others, to journey through their borders and up to the United States, with the intention of entering our country illegally, all payments made to them will STOP (END)!" he tweeted.
Mr Trump, who has sought to curtail immigration and build a border wall on the Mexican border, this week threatened to halt aid if Central American governments did not act.
The General Accountability Office looked at Bush and Obama administration mobilisation on the border and found that DHS did not understand what its military support could and could not do, which frustrated both DHS and Pentagon officials.
On Wednesday, the president also threatened to cut US aid to the Northern Triangle countries - Honduras, Guatemala and El Salvador - saying "all payments made to them will STOP (END)!".
The migrants say they organized for the long and hard journey on social media, but Washington suspects the group has been organized as a deliberate provocation.