Prime Minister Rafik Hariri summoned Washington's ambassador to Lebanon on Saturday over reports Congress was considering freezing the accounts and assets of Lebanese and Syrian officials in the United States as a way to pressure both countries. Hariri expressed to Jeffrey Feltman "his concern and objections" to reports U.S. President George W. Bush has received from lawmakers proposals to freeze such accounts to secure compliance with a U.N. resolution calling for a Syrian troop withdrawal from Lebanon, according to a statement from the prime minister's press office.