Who usually handles bills on the Senate floor?

The majority leader handles the bills on the Senate floor.

Explanation:

The majority; senate leader is doing essential roles in the American congress. The senate members usually elect him, and he acts as the primary spokesperson of the leading party. Based on some situations, sometimes the majority leader of the senator act s a spokesperson of the party

Usually, the majority leader manages the senate, even though the president is given the mandate of the senate president, the majority leader still owns the authority of the senate members. Therefore all authoritative power is controlled by majority leader.

In the Senate bills are bought to the floor when the majority of the Senate chooses to bring one. The bills must be voted on.