The gay son of Rep. Matt Salmon, Arizona Republican, told KPNX-TV in Phoenix on Sunday that both MSNBC’s “The Last Word With Lawrence O'Donnell” and CNN’s “Piers Morgan Live” canceled interviews with him because he refused to attack his father on the air. Matt R. Salmon, the son, said MSNBC canceled his appearance because “they had intended to be critical of him and … I was unwilling to do so.” He also said CNN “seemed very gung ho about” an interview at first, but when he said he was supportive of his father, “they seemed to lose interest.”