Who Has The Worst History of Doping?

It is quite interesting to see Americans accuse Usain Bolt of doping when Jamaica has no history of doping but the USA has the following:

• The dawn of drug testing was the 1983 Pan Am Games in Caracas, Venezuela and when Canadian weightlifter Guy Greavette tested positive for steroids, a dozen American athletes in various events suddenly withdrew from the competition and returned to the U.S., and at least another dozen athletes from other countries also left without explanation.
  
  
• Former U.S. Olympic Committee anti-doping chief, Dr. Wade Exum, wrote a 30,000+ page report in 2003 that said:
  
  (1) 19 American medallists were allowed to compete at various Olympic Games from 1988 to 2000 despite having earlier failed drug tests
  
  (2) More than 100 athletes from several different sports tested positive for banned substances between 1988 and 2000 but were cleared by internal appeals processes.
  
  (3) According to Exum's evidence, Lewis was one of three eventual Olympic gold medallists who tested positive for banned stimulants in the months leading up to the 1988 Seoul Games. Lewis was awarded the gold medal in the 100-metres after Ben Johnson was disqualified for using steroids.
  
  
• US athlete Jerome Young being allowed to compete – and win a gold medal – at the 2000 Sydney Olympics despite testing positive for steroids in 1999.
  
  
• 2003 was a big catch:
  (1) U.S. sprinter Kelli White stripped of her two gold medals from the World Track & Field Championships for testing positive for Modafinil
  (2) four-time U.S. 400 hurdles champ Sandra Glover
  (3) 25-time U.S. middle distance national champion and two-time 1,500 meter World Champ silver medalist Regina Jacobs
  (4) 2003 U.S. national shot put champion Kevin Toth
  
  
• Tim Montgomery - 100m World Record revoked after he admitted accepting steroids and other performance enhancing drugs from BALCO
  
  
• CJ Hunter
  
  
• Marion Jones
  
  
• Cyclist Floyd Landis
  
  
• Justin Gatlin, the American sprinter and Olympic gold medalist, with a 100 m personal best of 9.85 seconds. He is currently serving a four year ban
  
  
• Alvin Harrison, an American athlete that won a gold medal in the 4 x 400 metres relay at both the 1996 and 2000 Summer Olympics and a silver medal in the 400 metres at the 2000 Summer Olympics. Alvin Harrison did not compete in the 2004 Olympics due to circumstantial evidence of using a banned substance. In October of 2004, Harrison agreed to a four-year suspension with the U.S. Anti-Doping Agency.
  
  
• Antonio Pettigrew was a 2000 Olympic gold medalist in the men's 4x400 meter relay for the United States, by his own admission while using performance-enhancing drugs between 1997 and 2001. The 2000 Sydney Olympics 4 x 400 metres relay US team was stripped of their medals after Pettigrew admitted that he had used performance-enhancing drugs
  
  
• Jerome Young (born in Clarendon, Jamaica) attended high school in Hartford, Connecticut at Prince Technical, is a sprint athlete. His reputation as a sprinter has been tarnished as he was caught doping in 1999. He and his teammates were stripped of their 2000 Olympic medal in the 4x400 m relay
  
  
• LaTasha Jenkins is a former American sprinter who tested positive for nandrolone in 2006
  

And this is mainly track and field. I haven't even scratched the surface of the doping cases in the NFL or Baseball!

It is very interesting when any American throws the doping allegations at others - maybe it's because they are intimately familiar with the idea of doped up athletes and just can't believe that they are not the supreme country in something.