so that the gods didnt get mad at them
Answer:
Germany's resumption of submarine attacks on passenger and merchant ships in 1917 became the primary motivation behind Wilson's decision to lead the United States into World War I.
The answer would be : The Constitution
Many thought that congress is the one who limit the power of Government since they have the capabilities to decline a bill. But the highest hierarchy of power within every democratic countries fall to its constitution.
Whatever the congress and the Government planned on doing, it absolutely cannot stray from the constitution