Ahmed Chalabi, a powerful Iraqi politician whose faulty information on Iraq’s now-debunked program to build weapons of mass destruction helped persuade the U.S. and its coalition partners to invade the country, died Tuesday morning. He was 71.

Mr. Chalabi suffered a heart attack at his home in the Baghdad neighborhood of Kadhimiya, according to Jabar Abdel Khaliq, a member of parliament who served alongside Mr. Chalabi in parliament’s finance committee.

His...