McCain is dumbass ignorant or batshit crazy
Also, McCain thinks the president can fire the chair of the SEC. Um, no, the president can't.
Neither of these will have the impact of McCain's recent statement that he thinks "The fundamentals of our economy are strong." That's the sort of out-of-touch doozy that can help you lose an election. Especially since it reinforces an already existing narrative about McCain being hopelessly isolated from the financial realities of the nation (thinks anyone making under $5 million a year is middle class, thinks American's wouldn't pick lettuce for $50 an hour, can't remember how many houses he owns, etc.)
What other whoppers does this pair of buffoons have to offer us? It's becoming more and more clear that neither of them should be allowed near heavy machinery, to say nothing of the executive branch of the US government.