Fnord wrote:
It's a ploy to shame the Sanctuary Cities into either "putting up" or "shutting up". The leaders of those cities know that if they accept Mr. Trump's offer, they will be putting a burden on their already-strained city budgets; and if they don't accept Mr. Trump's offer, they will be exposed as virtue-signalling hypocrites. It's lose-lose for the Sanctuary Cities.
Think "Poker", not "Chess".
And also, it teaches the lesson that you can't just open the border. Just as the individual sanctuary cities will get overstretched, America itself would get overstretched if you just opened the border.