What are two things established by Article I of the Constitution? It sets the rules for filibuster.
It permits lobbyists to work with Congress.
It grants Congress the power to legislate.
It defines how bills are approved or vetoed.

A dry description of the function of congressional leadership and the many committees and subcommittees in Congress may suggest that the drafting and amending of legislation is a finely tuned process that has become ever more refined over the course of the last few centuries. In reality, however, committees are more likely to kill legislation than to pass it. And the last few decades have seen a dramatic transformation in the way Congress does business. Creative interpretations of rules and statues have turned small loopholes into the large gateways through which much congressional work now gets done. In this section, we will explore both the traditional legislative route by which a bill becomes a law and the modern incarnation of the process. We will also learn how and why the transformation occurred.

Grants Congress the power to legislate

It defines how bills are approved or vetoed

answer; i believe that the correct answer is ( troxel v. granville);