Rainer, who finished eighth at the 1992 Olympics in Albertville, France, faces a mandatory two-year ban from competition.
But he argued that it was an "honest mistake" that should not lead to the mandatory five-year ban from political office.
In August 2009, it was confirmed that Hock would face a two-year ban from rugby league as he did not appeal against the mandatory ban.
At a special Congress convened here, the International Swimming Federation voted to extend to four years a mandatory ban on first-time steroid users.
Diouf, thought to earn around £30,000 a week, was given a mandatory 12-month ban and fined £3,000 with £65 costs to be paid within seven days.
According to the code, the mandatory two-year ban can be raised to four years if "the athlete or other person used or possessed multiple prohibited substances".
Legislators say the next step will be a mandatory ban.
The first-offense penalty for driving without insurance is a mandatory six-month ban on driving, community service and a $300 fine.
Uefa say its disciplinary panel will study the England forward's case at a meeting on Thursday and consider increasing his mandatory one-match ban.
Under FINA rules, any first-time steroid offender faces a mandatory two-year ban.