They were on a list of four countries, along with Kenya, Russia and Spain, published last month by WADA. 

They had first been placed on the list by WADA in March after failing to meet a deadline for making required changes to their drugs testing procedures.

Unlike Kenya and Russia, however, who are on the list because their drug testing systems are non-compliant, Mexico was on it was because they did not have the correct national legislation in place.

"Further to a circular vote of its Foundation Board members, the World Anti-Doping Agency has removed the Comité Nacional Antidopaje de México (Mexican National Anti-Doping Organisation) from the list of signatories previously deemed non-compliant with the World Anti-Doping Code (Code)," WADA said in a statement.

"Mexico has drafted and adopted anti-doping legislation and regulations that are now deemed to be in line with the Code."

Spain, though, remain on the non-compliant list.

Their problems have been exacerbated by the fact the country remains without a Government after negotiations continue to stall to create a coalition following the election of a hung Parliament last December, meaning there is currently no framework to introduce any changes.