A) The political ideology behind Senator Sanders proposed law is leftist, more specifically liberalism, who support a debt-free college plan. He wants to match funds for the states that want to eliminate tuition, thus providing 47 billion a year to states to get rid of undergraduate tuition and fees.
B) In the context of this scenario, the proposed law would affect federal fiscal policy in a negative way, because the federal deficit would increase. The state fiscal policy would probably tax these since they would be negatively affected as well.