Advocates are hoping a decade-old federal ban on tracking certain information about college students could get rolled back as senators rewrite the federal higher education law. Sen. Lamar Alexander (R-Tenn.), the education committee's chairman, has resisted efforts to broaden data collected about students, but advocates say there are too many lawmakers, both Democratic and Republican, pushing the change for Alexander not to consider it. And the need for better data about how students fare in college and the workforce has come up at just about every hearing on reauthorizing the Higher Education Act - which have all been focused on issues Alexander picked.