Capitalization in Titles of Works

Q. When I refer to the government of the United States in text, should it be US Federal Government or US federal government?

A. The government of the United States is not a single official entity. Nor is it when it is referred to as the federal government or the US government or the US federal government. It’s just a government, which, like those in all countries, has some official bodies that act and operate in the name of government: the Congress, the Senate, the Department of State, etc.