Simplify the following text for a Grade 13 native English-speaking person.
Original: In some parts of the United States , many people who were considered non-white were disenfranchised , barred from government office , and prevented from holding most government jobs well into the second half of the twentieth century .
Simplified: In some parts of the United States , many people who were considered non-white could not vote and were barred from government office , and prevented from holding most government jobs â '' well into the second half of the twentieth century .