“Sen. Tom Cotton of Arkansas is among the most vocal opponents of moving towards year-round Daylight Saving Time, and has vowed to block any proponents’ efforts to quickly approve the bill on the floor through a process known as unanimous consent, which requires all 100 senators to agree to an expedited vote,” CNN reports.“There are plenty of other senators like Cotton who oppose the bill, and warn that a later sunrise would endanger children who could be forced to commute to school in the dark.”