Senate Democrats yesterday defeated a Republican effort The piecemeal approach is favored by some members of both parties, including several of those who fought hardest for the earlier bill, including Sen. John McCain, Arizona Republican. The two top Democratic 2008 presidential candidates, Sens. Hillary Rodham Clinton of New York and Barack Obama of Illinois, told the National Council of La Raza earlier that they would be "open" to voting for piecemeal legislation.... Democrats tried to get an agreement yesterday to pass an agriculture worker bill that would create a program for future agriculture workers and offer a path to citizenship...