WASHINGTON — One of the staunchest critics of government surveillance programs said today that the national intelligence director did not give him a straight answer last March when he asked whether the National Security Agency collects any data on millions of Americans.

Sen. Ron Wyden, D-Ore., called for hearings to discuss two recently revealed NSA programs that collect billions of telephone numbers and Internet usage daily. He was also among a group of senators who introduced legislation today to force the government to declassify opinions of a secret court that authorizes the surveillance.

“The American people have the right to expect straight answers from the intelligence leadership to the questions asked by their representatives,” Wyden said in a statement.

He was referring to an exchange with Director of National Intelligence James Clapper during a Senate Intelligence hearing in March about threats the U.S. faces from around the world.

Wyden said he wanted to know the scope of the top secret surveillance programs, and privately asked NSA Director Keith Alexander for clarity. When he did not get a satisfactory answer, Wyden said he alerted Clapper’s office a day early that he would ask the same question at the public hearing.

“Does the NSA collect any type of data at all on millions or hundreds of millions of Americans?” Wyden asked Clapper at the March 12 hearing.

“No, sir,” Clapper answered.

“It does not?” Wyden pressed.

Clapper quickly and haltingly softened his answer. “Not wittingly,” he said. “There are cases where they could, inadvertently perhaps, collect — but not wittingly.”