No, Tecumseh’s Curse was broken by Ronaldus Magnus. He was elected in 1980, which set him up for it. But, because he was a truly born-again Christian, the Spirit of G-d in him broke the curse.
Note that George W. Bush also would have fallen under the curse. Nothing happened. Again, Reagan broke the curse.
Plugs isn’t under it, as far as I know.
George W. Bush did not get shot, but he had to dodge a shoe that was thrown at him in Iraq. Probably would not have killed him.