If he sent in troops to collect by force, even the Democrats would be voting him out. He's not going to be able to use any legal mechanisms to enforce a law the Supreme Court deems unconstitutional.
It just wouldn't work for Obama to do that kind of thing, even if he wanted to, which I'm pretty sure he doesn't, as much as some people suspect his intentions.
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Congratulations to SuperNiceDog, Guru Winner, who was smart enough to pick
your 7 time champion, Link.