President Obama recently fulfilled one of his 2008 campaign promises. On June 9, he signed a presidential memorandum expanding a student loan program that will allow certain college graduates to only pay 10 percent of their income on federal student loans. Their debt is erased after 10 years if they work for the government or a nonprofit. It will also be erased after 20 years if they join the regular work force. While there are many reasons this may be a good or bad idea, I have one rather big concern.