Some of the few I can think of off-hand: The ability to declare war The ability to decide/change taxes The ability to impeach the president Approval of supreme court justices The ability to make...
Make and pass legislation, override a veto with a 2/3 majority, make federal courts, approve or deny presidential appointments, impeach president
Burrow money, regulate federal land, control taxation, and to control trade ( domestic and foreign )
Stop wasting your time on Congress man. Congress is just a bunch of democratic freaks.
Congress has the power to tax