TRENTON, N.J. (AP) -- Big-name Republicans are standing behind New Jersey Gov. Chris Christie days after a former loyalist said evidence exists that Christie knew about a politically motivated traffic jam last year even as it happened.
Christie has denied that claim and said he learned about the jam ordered by one of his aides only after it was over.
Former Port Authority of New York and New Jersey executive David Wildstein hasn't detailed the evidence.
U.S. Rep. Paul Ryan of Wisconsin said today "nothing has been proven."
Louisiana Gov. Bobby Jindal and former New York City Mayor Rudy Giuliani said there was no reason for Christie to step down as chairman of the Republican Governors Association.