To be honest, I’m mildly surprised that there haven’t been an attempt s up to now. The media literally demonizes him on an hourly basis. There are people that stand to lose quite a bit when he wins. I can only imagine all the social justice warriors that believe that they would be idolized if they were to be the one that took him out.
There was.
Don't you recall the Brit who tried to grab the cop's gun?
His mission was to kill Trump.
Boy did that go down the memory hole quickly.