Lawmakers must open an investigation into the "complex network of relations" between ANR, Russia

A couple of Democratic lawmakers reportedly opened an investigation into what they call the "complex network of relationships" between some individuals from the National Rifle Association (NRA) and Russia.

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The news channel notes that lawmakers have expressed concern over the NRA's attempts to disassociate itself from its official participation in a trip made in 2015 by a group of its members in Moscow.

The organization's outside counsel, William A. Brewer III, told the New York Times that LaPierre was "opposed to travel". But new information, such as internal emails, reviewed by ABC News last month, indicates that the organization may have been significantly involved in the trip.

A photo of the visit shows several current and former members of the NRA alongside Maria Butina, accused of Russian espionage who allegedly attempted to create a route of communication between ANR and Russia, and Alexander Torshin, a Russian politician suspected of being Butina is superior.

Location and Rice said the contrasting image could show an intent to deceive the public, according to ABC News. Legislators have demanded a full report on communications, meetings and monetary transactions between ANR officials and people related to Russia.

"We are disturbed by the lack of transparency demonstrated by the NRA regarding the trip to Moscow in December 2015," wrote Lieu and Rice. 15. "Furthermore, we are concerned that this does not extend to any other allegations made against the organization with respect to Russia."

They also asked how the ANR could have used the money received from individuals related to Russia during the 2016 presidential campaign.

Brewer did not immediately return a request for comment to ABC News. He also pointed to a statement he told the New York Times that the NRA CEO did not want the 2015 trip to Moscow "to be seen as representing the NRA".

"When he got to know the details of the trip, Wayne personally opposed it," Brewer told ABC News through a spokesman.

The December 2015 Moscow trip included meetings with people from President Vladimir Putin's inner circle. The event has been under scrutiny in recent months after Russian agent Maria Butina pleaded guilty to conspiracy charges.