20: changed the inauguration date from sometime in march to january 20th
21: unbanned drinking, allowing anyone over 21 to legally drink canceling out the 18th amendment.
22: states that a person can only hold presidency for two terms (8 years)
23: Gave d.c a right to vote and granted them with 3 electoral votes
24: helped african americans voters by stating you could not tax people to vote.
25: vice president can take over presidency if president can not fulfill their duties.
26: changed the legal voting age to 18.
27: changes in congress pay can not become effective until the next congressional term.