Bill Clinton may be Barack Obama’s BFF, but he’s not one to exclude. Mitt Romney spoke at the Clinton Global Initiative Tuesday morning, and Clinton takes full credit for getting the Republican presidential nominee on board. "I invited him," Clinton told the hosts of MSNBC's "Morning Joe" today. "I called him and invited him. We did it four years ago, remember? Senator McCain came and brought Governor Palin with him. And if you look, whatever you think about his tax return, [he’s] given a substantial amount of money to charity; he might want to talk about that today."