Federalist No. 45, titled "The Alleged Danger From the Powers of the Union to the State Governments Considered", is the 45th out of 85 essays of the Federalist Papers series. No. 45 was written by James Madison, but was published under the pseudonym Publius, on January 26, 1788. The main focus of the essay is how the state and federal governments will function within the Union, while keeping the people's happiness in mind.