During Barack Obama’s presidency, the US relaxed its attitude towards cannabis. Donald Trump’s presidency and ‘Trump on Pot’ may be about to change this situation. Four US states have legalised recreational cannabis. That doubled during the 2016 election. Obama recently indicated federal legalisation of cannabis was inevitable. He said the government should treat it as a “public health issue, the same way we do with cigarettes and alcohol”. He said this was a “smarter way to deal with it”.