The fact only the House can start revenue bills is known as

The fact that only the House of Representatives can start revenue bills is known as the "Origination Clause" or the "Revenue Clause" of the United States Constitution. This clause is found in Article I, Section 7 of the Constitution, which states that "All Bills for raising Revenue shall originate in the House of Representatives; but the Senate may propose or concur with Amendments as on other Bills."<br /><br />This means that the House of Representatives has the exclusive power to introduce bills that would raise revenue, such as tax bills or bills to authorize government spending. The Senate, on the other hand, can propose amendments to these bills, but it cannot initiate them.<br /><br />The Origination Clause is a key part of the system of checks and balances in the U.S. government, as it gives the legislative branch that is closest to the people (the House of Representatives) the primary responsibility for raising revenue. This is seen as a way to ensure that the government is accountable to the people and that the power of the purse is not concentrated in the hands of a single branch of government.