Yes, most definitely. It is rampant, both subconscious and VERY conscious racism/discrimination, in the attitudes towards President Obama and his policies and there was also an example of prejudice towards women, when Hilary Clinton ran for the Presidency.
It was shocking to see both conservatives and some of the supposedly "educated, enlightened" liberals launching brutal, degrading attacks on her, many of which centered around her appearance. This was a powerful, intelligent, and ridiculously sharp woman being pulled down by the right and elements of her own party. It was disgusting.
This racism/sexism within U.S. politics has a long and ugly history. Why do you think women and African-Americans actually had to FIGHT to obtain something as basic as the vote? Ethnocentrism and bigotry within the political system has been used as a weapon of suppression against some and a tool of privilege and opportunity for others.