White House maintains Obama has already been clear about opposing Russia's anti-gay law
18 officials’ assets frozen, denied visas under 2012 law
Pressure builds on U.S. to respond to Putin's anti-gay crackdown
Singer recently co-launched campaign for LGBT Russians
Retired Olympian says Thomas Roberts a 'feather in Putin's cap'
As world leaders announce boycott, White House remains silent
U.S. ambassador to the U.N. took part in LGBT roundtable
Gay singer made comments during Dec. 6 concert in Moscow
Russia, Cuba criticized for anti-gay records
Says he supports the people, not gov't
