The plan to create a fund that could have funneled taxpayer money to the president’s allies drew repeated scrutiny, including a rare rebuke from Senate Republicans.
The president intends to travel to Ireland on the plane, the first time he will have used it overseas since questions were raised about its defensive capabilities.
Republican groups had asked the court to clear the way for political parties to pay the same low-cost ad rates as candidates, a move that could undercut a Democratic advantage in the midterms.