Yes.
She may have an edge that cuts a few people too deep, but I haven't known her to be wrong. Pretty much ever.
The only one that is even questionable is when she said canada sent troops to Vietnam. And if you google canada, vietnam and Ann Coulter you can get the skinny on that one from both sides.
Funny thing is, though, that those that hate her, in spite of the volumes of her written and recorded word, seem to be focused on the ONE SINGLE "possible" gaff.
That is very much in her favor.