Why didn't the US move to annex Texas after the declaration of independence?

After Texas declared independence from Mexico in 1836, the United States did not immediately move to annex it due to a combination of political and diplomatic factors. There was significant concern about the implications of adding another slave state, which could upset the balance between free and slave states in Congress. Additionally, the U.S. was wary of provoking Mexico, which still considered Texas part of its territory. These complexities delayed annexation until 1845, when the political landscape had shifted.