Here's a link to a recent article that also has the video where he made the comment about Obama to Helwani:
And here's another one with comments from Volkmann responding to what's happened:
In a new interview with MMA Weekly, Volkmann shared the following sentiments: “There’s too many people that are too sensitive out there… I guess you’re definitely not supposed to have an opinion about certain policies that effect you… Last I checked we’re not in the Soviet Union… I talked to Monte (Cox) and Monte talked to the UFC and Joe Silva, and he said they’re not upset about it. They’re with me on this one.”
I definitely think it's a case of a lot being made out of something initially said off the cuff jokingly.