Representative Peter King rethinks his position.

Once a vocal and frequent House champion for the IRA’s political wing, Sinn Fein, and its leader, Gerry Adams, the 60-year-old, Queens-born Mr. King has said nothing about either on the House floor in years. The politician once called the IRA “the legitimate voice of occupied Ireland,” he was banned from the BBC by British censors for his pro-IRA views, and he refused to denounce the IRA when one of its mortar bombs killed nine Northern Irish police officers. But Mr. King is now one of America’s most outspoken foes of terrorism.