Through senate bills and joint resolutions:
A bill is a legislative proposal before Congress. Bills from each house are assigned a number in the order in which they are introduced, starting at the beginning of each Congress (first and second sessions).
A joint resolution is a legislative proposal that requires the approval of both houses and the signature of the President, just as a bill does. Resolutions from each house are assigned a number in the order in which they are introduced, starting at the beginning of each Congress (first and second sessions).