What are the power forrbiden to the congress?

The powers forbidden to Congress are outlined primarily in Article I, Section 9 of the U.S. Constitution. These include the prohibition of passing ex post facto laws, granting titles of nobility, and suspending the writ of habeas corpus except in cases of rebellion or invasion. Additionally, Congress cannot impose taxes on exports between states or favor one state over another in regulation of commerce. These restrictions are intended to protect individual rights and maintain a balance of power among government branches.