WASHINGTON (AP) _ President Clinton said Thursday that Elian Gonzalez should be promptly reunited with his father, saying ``there's now no conceivable argument'' to keep them apart after a federal court ruled the boy cannot leave the United States.

``I think he should be reunited in as prompt and orderly way as possible,'' Clinton said.

Clinton spoke a day after a three-judge panel of the 11th U.S. Circuit Court of Appeals in Atlanta said that Elian must remain in the United States until the court decides whether he should get an asylum hearing. A hearing was set for May 11.

``There's now no conceivable argument for his not being able to be reunited with his son,'' Clinton said. ``That is what the lawful process has said. The immigration law is clear and the determination of the INS and a federal court are clear.''