Simple, because he didn’t make a direct threat, didn’t direct anyone else either. Hell, he didn’t even call for her death. Trump’s using the mob boss language he learned in NYC.

“I think OP should have 9 guns pointed in his face for posting this.”

See how that works? All I said was that you should be threatened. Didn’t threaten action myself nor direct anyone else to action.

Speech like this is clearly stochastic terrorism, but the US really doesn’t have laws around it. I would hope there’s an incitement angle to this, IANAL, but our strong 1A rights make it sticky.