President Trump isn’t dumb, @nytopinion columnist David French argues. He’s “diabolically shrewd” — especially in how he picks political targets that can be difficult to defend. “Undocumented immigrants are a prime example. Here’s another one: How many people are going to go in the streets to chant ‘Hands off Harvard,’ ‘Hands off Skadden, Arps’? Nobody. Nobody is going to do that because he’s picking on these major educational and legal institutions, some institutions that are actually not popul