The language of Amendment XIV contains counting language and apportionment language.
It is the duty of Trump, the Census Bureau, the courts, etc. to respect Amendment XIV as written, which is possible but tedious work.
The problem is ah*le Democrats that don't respect the Constitution and Amendments as written. They want additional questions on the Census that favor illegal criminals and do not allow valid questions that favor citizens. Despite President Trump trying to do his duty, the ah*le Democrats circumvent our nation's rules and laws!