Eurofed's United States of the Americas and Oceania features a strong federalist party. They focus on huge infrastructure projects to bind the massive USAO together
Are there are any TLs on the forum that deal with either a stronger central government in the US or a strong Federalist Party lasting longer?
Check out the Dominion of Southern America as well, as the Federalists are still going strong into the 20th century thus far (link in sig).