There are two reasons one was to follow after Pancho Villa and 2nd was to start a revolt (someone already asked this question XD)
Britain became uber poor and started try to tax the USA even more even though they had already lost.
Answer:
The Grandfather Clause allowed many white Americans to avoid paying the poll tax and completing the literacy tests
Explanation:
It's called the grandfather clause because they used to use descendance and ancestry to decide if you were eligible to vote :)
