WASHINGTON -- Hillary Rodham Clinton says she intends to serve as secretary of state throughout the first term of the Obama administration.

Clinton says the job is exhausting but that she enjoys it and feels her efforts are making a difference around the world, though she adds that there are incredibly difficult problems.

Clinton says she does not want to serve on the Supreme Court and has never wanted to be a judge. President Obama is considering potential replacements for retiring Supreme Court Justice John Paul Stevens.

Clinton spoke Sunday on NBC's "Meet the Press."