Washington, D.C. ? A federal judge on Thursday threw out a lawsuit questioning President Barack Obama’s citizenship, lambasting the case as a waste of the court’s time and suggesting the plaintiff’s attorney may have to compensate the president’s lawyer.

In an argument popular on the Internet and taken seriously practically nowhere else, Obama’s critics argue he is ineligible to be president because he is not a “natural-born citizen” as the Constitution requires.

In response last summer, Obama’s campaign posted his Hawaiian birth certificate on its Web site. But the lawsuit argues it is a fake and that Obama was actually born in his father’s homeland of Kenya, even though Hawaiian officials have said the document is authentic.