Reason Morning Links: Banks Say No to California IOUs, Obama Officials Mount Case for Second Stimulus, More Ethnic Clashes in China

– Obama's Justice Department to use Sherman Act to aggressively pursue large companies for what it calls anti-competitive practices.

– Recession has led to a spike in sperm and egg donations.

– Big banks say they will refuse California state government's IOUs.

– Ethnic tensions mount in China's Xinjiang province, as minority Uighurs clash with the ruling Han Chinese.

– Obama economic advisor Laura Tyson says the federal deficit will be worse than predicted, and that we should begin preparing for a second economic stimulus package.