It was mainly to keep blacks from voting. so they made up rules the blacks had to follow in order to vote.
Answer: It's just a tradition
Explanation: This is just a tradition that President Roosevelt started there really isn't much to it besides it is a tradition. Even Donald Trump nowadays does it and keeps the tradition going. Hope this helps. ;)
Senaters have no term limits
If you don't pay a service you wont be able to get it. So if he doesn't pay if he wont be able to vote
Go and click to the invitation bar and you can find an option written as " search friends " . Then it's easy to find that unknown user if you're pretty fond with his/her username and DP ( display picture ).