JPMorgan Chase CEO Jamie Dimon arrived at the U.S. Justice Department building to meet with Attorney General Eric Holder, according to reports. The two sides are discussing how big a settlement the bank will pay to end civil and criminal charges over the mortgage mess. Also, bureaucrats in Washington are drawing up contingency plans if Congress doesn't raise the debt limit -- but how do you prioritize who gets paid, and who doesn't. And finally, Twitter is partnering with the National Football League in an advertising deal. Will this prove to investors that the social network can make money?