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If you read this article about the Democrats whining about Trump using federal prisons to house illegal immigrants while they wait for disposition, you will see a great example of Trump playing multi dimensional chess.
There are several different components that all work together as a whole to put pressure on not only the immigration issue, but Congress also to cough up more funding.
The guy fucks with people from one end of the issue to the other in very subtle ways.
https://www.reuters.com/article/us-usa-immigration-prisons/u-s-democrats-blast-use-of-federal-prisons-to-house-detained-immigrants-idUSKCN1J42KT