White House press secretary Jay Carney speaks to reporters at the daily press briefing, Friday, April 11, 2014, at the White House in Washington. The US, in a rare diplomatic rebuke, will not grant a visa to Tehran's pick for envoy to the United Nations, the Obama administration said Friday. "We've communicated with the Iranians at a number of levels and made clear our position on this _ and that includes our position that the selection was not viable," Carney said. "Our position is that we will not be issuing him a visa."(AP Photo/Charles Dharapak)