Lawyers for the sponsors of California's same-sex marriage ban have filed an emergency motion asking the U.S. Supreme Court to stop gay weddings, reported Associated Press.
The supporters of gay marriage say the federal appeals court "acted prematurely" by lifting an injunction which prevents the unions.
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The decision was met with outrage and anger by UK cities which were on the shortlist for the prestigious award.
Mr Lewis is one of a number of Labour and Tory MPs under investigation by party officials over allegations of inappropriate conduct.
A jury has failed to reach a verdict in Emile Cilliers' trial on charges of attempting to murder his wife by tampering with her parachute.