Bernie Sanders put Democrats on notice Monday that he's not just hoping to influence Washington's agenda under the next president — he's got his eye on this fall's "lame duck" session of Congress. Sanders is concerned that President Barack Obama may try to get legislators to approve the TPP in the congressional session that takes place after the November election and before the new Congress and president take office next year. The vanquished Democratic candidate told his devoted supporters in a raucous pre-convention meeting on Monday: Yes, we will end our disastrous trade policies, including the TPP. [...] starting today, we are going to do everything we can to make sure that TPP does not come to the floor of Congress during the lame duck session.