The U.S. House of Representatives and U.S. Senate each have a sergeant-at-arms, whose job it is to maintain order in the legislative chamber. 

In the Senate, the sergeant-at-arms can also be instructed to request the presence of senators if not enough senators are present to meet a quorum.  If the motion to instruct the sergeant-at-arms does not bring in enough senators, the sergeant-at-arms can be instructed to write arrest warrants for all absent senators and is then required to hunt them down and bring them to the floor.