There is a similarity but there are some significant differences. The Weimar Republic was young, not well established, and weak; a good environment for just about anything to come along that would suggest better conditions for the Germans.
In contrast, our form of government, our shared values, have deep roots established over more than two centuries.
As to the parallel of Hitler having been elected, so have 44 presidents, and now the 45th president of our country. The point you attempt to make, Ms. Spicer, is rather blunt.