DEUTSCHE BANK: These 2 risks could derail the US economy

David Goldman/Getty With the US economicrecovery entering its eighth year, there continue to be questions about how much longer it can go on. Torsten Sløk, Deutsche Bank's chief international economist who has been staunchly bullish on the economy for a while,wrote on two things that could derail the expansion in a client note on Friday. They both relate to consumer credit, which happened to be one of the biggest drags on the economy during the last recession. At the moment we worry about two d...