The Department of Homeland Security is promising to prosecute all illegal migrants, likely reducing the economic incentive for poor migrants to risk jail while trying to get jobs in the United States.
"If you enter our country illegally, you have broken the law and will be referred for prosecution," said DHS Press Secretary Tyler Houlton said in a May 4 statement. He warned migrants:

DHS has zero tolerance for those who break the law and will no longer exempt classes or groups of individuals from prosecution.  Whether you are a single adult or an adult member of a family unit, if you are apprehended you will be prosecuted and put in removal proceeding.

Houlton also warned migrants who try deceive border patrol officers, saying:

To those seeking to abuse our generous laws – we are watching.  We will not sit back and watch our laws exploited.  If you make a false immigration claim, you will be referred for prosecution.  If you assist or coach individuals in making false immigration claims, you will be referred for prosecution.

Houlton's statement follows the announcement by Attorney General Jeff Sessions that he has added 35 prosecutors to border regions so they can prosecute migrants who sneak across the border or migrants who lie in their asylum claims:

People are not going to "caravan" or otherwise stampede our border. We need legality and integrity in the system. People should wait their turn, ask to apply lawfully before they enter our country. So we're sending a message worldwide: Don't come illegally. Make your claim to enter America in the lawful way and wait your turn.

Sessions is also adding judges to the border to help screen the many economic migrants who ask for some form of humanitarian asylum so they can get work permits in the United States.
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http://www.breitbart.com/immigration/2018/05/04/dhs-promises-zero-tolerance-for-migrants/

Immigration is another issue, like abortion and crazy climate change, that the left has lost on in the court of public opinion. Thats what trump ran on. The ppl want this under control, and the left cannot seem to rape thier heads around that fact.