[Vigilanteman]

Obama’s, and America’s, credibility is shrinking by the second.

Obama never had any credibility to begin with. Whatever credibility America had left was pissed away on November 6, 2012.

[RipSawyer]

“Whatever credibility America had left was pissed away on November 6, 2012.”
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That was only the final confirmation, the nation lost its credibility long before that.