Special counsel Robert Mueller's team has expressed interest in the Trump campaign's relationship with the National Rifle Association during the 2016 campaign. "When I was interviewed by the special counsel's office, I was asked about the Trump campaign and our dealings with the NRA," Sam Nunberg, a former Trump campaign aide, told CNN. The special counsel's team was curious to learn more about how Donald Trump and his operatives first formed a relationship with the NRA and how Trump wound up speaking at the group's annual meeting in 2015, just months before announcing his presidential bid, Nunberg said.