Trump is once again rolling out a botched scheme written by people who do not understand the law.  Trump is suggesting sending South Americans to Mexico - as if Mexico is going to accept them.  He really cannot do anything correctly.  Lawyers, of course, are going to force his administration to follow the law and Constitution on ever single deportation.  The cost of new courthouses, U.S. Attorneys and such will swamp whatever "savings" Trump lied about.  Plus, it will take years - hopefully, after he's out of office.