Democrats and Republicans called separately Sunday for congressional investigations into President Bush's decision after the Sept. 11, 2001, terrorist attacks to allow domestic eavesdropping without court approval. "The president has, I think, made up a law that we never passed," said Sen. Russell Feingold, D-Wis. Sen. Arlen Specter, R-Penn., chairman of the Senate Judiciary Committee, said he intends to hold hearings. "They talk about constitutional authority," Specter said. "There are limits as to what the president can do." Senate Democratic Leader Harry Reid of Nevada also called for an investigation, and House Democratic leaders asked Speaker Dennis Hastert to create a bipartisan panel to do the same. Bush acknowledged Saturday that since October 2001 he has authorized the National Security Agency to eavesdrop on international phone calls and e-mails of people within the United States without seeking warrants from courts. The New York Times disclosed the existence of the program last week. Bush and other administration officials initially refused to discuss the surveillance or their legal authority, citing security concerns. "It's been briefed to the Congress over a dozen times, and, in fact, it is a program that is, by every effort we've been able to make, consistent with the statutes and with the law," Vice President Dick Cheney said Sunday in an interview with ABC News "Nightline" to be broadcast Monday evening: "It's the kind of capability if we'd had before 9/11 might have led us to be able to prevent 9/11."