The Congressman responsible for writing many of the U.S. sanctions against Iran lashed out on CNBC about London-based Standard Chartered’s business with the Islamic Republic and the negative reaction from Britain to the impact of U.S. sanctions on British banks.

“I think London should be more interested not in an attack from New York but by an attack from Tehran,” Rep. Gary Ackerman (D-NY) said on CNBC's "Power Lunch."