A New York man was traveling with his 7-year-old daughter when ICE knocked on his door over a critical email he sent months before. Now, he's suing.

ICE says David Streever’s email about the murder of two American citizens in Minneapolis was actually a threat.

Federal agents tried to track David Streever to his home and hotel, and left him a warning notice that a critical email he sent the former head of ICE may have been illegal. Now…