WASHINGTON (AP) — Conservative lawyer Larry Klayman might not be an all-around household name, but it’s a good bet he has sued someone who is.

Bill Clinton and Hillary Rodham Clinton. Dick Cheney. Osama bin Laden. Fidel Castro. And, the target of Klayman’s most recent legal tangle: President Barack Obama. Klayman is one of the plaintiffs who won an initial round this week in a lawsuit challenging the National Security Agency’s bulk collection of millions of Americans’ telephone records.