Bukele opened up several super max prisons where he has them rounded up and locked away. Can he get every single criminal in El Salvador? Of course not, we have God knows how many crimes committed in our country every day and we can't stop them all.
You're implying that by cracking down on crime the criminals are being "chased out of his country." How does that equate to them coming to the United States and if they are aren't we the ones failing at our border if we're letting them in? Once again, the question you haven't answered is whether or not Bukele is dumping them in the U.S. That's Trump's accusation. Where is his supporting evidence that Bukele is actively dumping criminals in the U.S.