After years of delays and contentious negotiations that threatened to derail the farm bill, Congress completed its work on a new five-year package Tuesday that now heads to the president. The Senate voted 68-32 on a $500 billion farm bill that will end direct payments to farmers, expand the popular crop insurance program and cut spending on food stamps for some poor Americans by 1%. The White House announced Tuesday afternoon that Obama is going to sign the farm bill on Friday during a visit to East Lansing, Mich.