https://en.wikipedia.org/wiki/National_Guard_of_Ukraine

18th Operational Regiment (Reinforced), Mariupol Regimental HQ 1st Patrol Battalion 2nd Special Purpose Battalion "Donbas", Mariupol Special Purpose Reinforced Battalion "Azov", Mariupol Special Patrol Company, Mariupol Support Company

In March 2015 Interior Minister Arsen Avakov announced that the Azov Regiment would be among the first units to be trained by United States Army troops in their Operation Fearless Guardian training mission.[46][47] US training however was withdrawn on 12 June 2015, as US House of Representatives passed an amendment blocking any aid (including arms and training) to the battalion due to its neo-Nazi background.[48] After the vote Congressman John Conyers thanked the House saying

I am grateful that the House of Representatives unanimously passed my amendments last night to ensure that our military does not train members of the repulsive neo-Nazi Azov Battalion, along with my measures to keep the dangerous and easily trafficked MANPADs out of these unstable regions.[47]

However, the amendment has since been removed as of November 2016.