Congress has expanded the domain of its legislative powers—the power to pass laws—as the nation has grown. The most significant expansion of congressional legislative power is in its control over the economy—taxing, spending, and regulating interstate commerce" (McGraw-Hill).
Congress and state legislatures share the power to propose amendments to the Constitution
Congress has the power to do whatever is “necessary and proper” to carry out its expressed powers; powers directly stated in the Constitution
The powers of Congress have limits
Commerce clause has given Congress great power to regulate many things, like banning discrimination in restaurants or hotels. This will help