Stop Illegal Immigration and Politically Correct Media Coverage

If we know in advance that a group of 1,500+ illegal immigrants from Honduras is determined to cross into the United States, why don't we put more ICE agents and police at the border to stop them? Why don't we drop or post leaflets now telling them that they and their children are not permitted to enter, and that the rights they claim to have don't exist? Why don't we have buses to bring them back there or to Mexico?  I thought we make the laws for our country, not them, so what's the problem (besides political correctness and the midterm elections)?