The mainstream media and the Democratic Party can try to hide it as much as possible, but there's no denying the cognitive ability of Joe Biden has been on a steep decline ever since he announced his candidacy. Now, in his latest misstep, he asked CBS correspondent Errol Barnnett "are you a junkie?" when questioned if he's considered taking a mental fitness test. And the only thing worse than watching Biden's sad decline, is thinking about the fact that he could be in the White House next year.