“Congress’s vote to deny the crisis on our southern border is a vote against reality.
“It is a tremendous crisis. We are on track for a million illegal aliens to rush our border. People hate the word invasion, but that is what it is.”
He said the US had “nowhere left to hold those who were captured”, saying the border facilities were “bursting at the seams”.
“The only option then is to release them. But some are stone cold criminals,” he said.
Mr Trump said that illegal immigrants “do a lot of damage in many cases”.
He added that Republican voters were “overwhelmingly” against the measure approved by Congress.