ThinkProgress says that Republican Arizona State Representative Brenda Barton stuck her foot in it on a Facebook post complaining about parks being closed during the shutdown:

Barton minced no words, calling Obama “De Fuhrer [sic]” and urging local sheriffs to arrest park rangers who enforce rules keeping people out of National Parks that are closed due to the federal government shutdown...Asked about it by the Arizona Capitol Times later that day, Barton stood by her Adolf Hitler analogy. “He’s dictating beyond his authority,” she explained.

Yesterday, Barton denied the whole thing, releasing a statement that indicated she wasn't calling Obama Hitler, she simply "used the German phrase for emphasis, Der Fuhrer." Uh huh.