to reduce harm by prohibition, for example of marijuana. In February 2009, the UK government was accused by its most senior expert drugs adviser Professor David Nutt of making political decisions with regard to drug classification, for example in rejecting the scientific advice to downgrade ecstasy from a class A drug. The Advisory Council on the Misuse of Drugs (ACMD) report on ecstasy, based on a 12-month study of 4,000 academic papers, concluded that it is nowhere near as dangerous as other class A drugs such as heroin and crack cocaine, and should be downgraded to class B. The advice was not followed. Jacqui Smith, then Home Secretary, was also widely criticised by the scientific community for bullying Professor David Nutt into apologising for his comments that, in the course of a normal year, more people died from falling off horses than died from taking ecstasy. Professor Nutt was later sacked by Jacqui Smith's successor as Home Secretary Alan Johnson; Johnson saying "It is important that the government's messages on drugs are clear and as an advisor you do nothing to undermine public understanding of them. I cannot have public confusion between scientific advice and policy and have therefore lost confidence in your ability to advise me as Chair of the ACMD." Consistency between drugs In the United States, defendants convicted of selling crack cocaine receive equal sentences to those convicted of selling 100 times the same amount of powder cocaine. This disparity was lessened during the Obama administration when the Fair Sentencing Act 2010 changed the ratio to 18 to 1. The majority of offenders convicted for selling crack are poor and/or black, while the majority of those convicted for selling cocaine are not. Same policy for distinct drugs Many drug policies group all illegal drugs into a single category. Since drugs drastically vary in their effects, addictive potential, dosages, methods of production, and consumption the arguments either way could be seen as inconsistent. Race and enforcement of drug laws It has been alleged that current drug laws are enforced in such a way as to penalize non-whites more harshly and more often than whites, and to penalize the poor of all races more harshly and more often than the middle and upper classes. For example, up until 2012, crack cocaine carried penalties one hundred times more severe than cocaine despite the fact that these drugs are essentially identical.