A law begins as a bill, which is designed to address a need or solve a problem. Only Senators or Representatives can submit a bill in Congress. A Senator may introduce a bill or resolution by sending it "to the desk" in the Senate chamber or dropping it off at the Senate Cloakroom. Floor or Cloakroom staff will give the bill to the Senate Parliamentarian, who determines which to which Committee will have jurisdiction over it. Then the bill goes to the Bill Clerk, who assigns it a number (i.e. S. 123), usually determined by the order in which a bill is introduced. The House follows a similar procedure, but bills are given "H.R." numbers (i.e. H.R. 123)