What is it called to “fix” or “change” something usually with a law?

I could be wrong but I think it is revise.

a) hostility to or prejudice against jews.

b) the holocaust, also referred to as the shoah, was a genocide during world war ii in which nazi germany, aided by its collaborators, systematically murdered approximately 6 million european jews             , around two-thirds of the jewish population of europe, between 1941 and 1945.

the tallest building in the western hemisphere and the sixth tallest building in the world