WASHINGTON (CBS DC) – President Obama may soon order the National Security Agency to stop monitoring the phone calls of friendly world leaders, reports the New York Times.

The White House told Senator Dianne Feinstein (D-Calif.) of its plans, according to the paper.

The Senate Intelligence Committee chairwoman said in a written statement she did not believe President Obama was aware of the spying program.

“I do not believe the United States should be collecting phone calls or emails of friendly presidents and prime ministers. The president should be required to approve any collection of this sort.” she added.

Deputy National Security Advisor Ben Rhodes tells CBS News Chief White House Correspondent Major Garrett the entire NSA program is under review, and that a policy change could be announced by the end of the year.

While he would not respond to questions about whether German Chancellor Angela Merkel was targeted, Rhodes did say that intelligence gathering operations would be looked at in a comprehensive manner.

CBS News Senior National Security Analyst Juan Zarate said it would be the responsibility of the Director of National Intelligence, James Clapper, to ensure the president is aware of the full scope of all such activities.

“At the end of the day the administration is responsible for the programs and authorizes these programs so the president has to answer for them,” Zarate said.