Russian gun rights activist Maria Butina developed bonds with conservative leaders during the 2016 campaign - culminating in outreach to then-candidate Trump. (Video: Bastien Inzaurralde, Jenny Starrs/The Washington Post)

The guilty plea Thursday of a woman accused of infiltrating the National Rifle Association on behalf of the Russian government has thrust the powerful conservative group into an uncomfortable spotlight as the organization appears to be facing declining donations and signs its fearsome political influence may be waning.

Russian gun rights activist Maria Butina pleaded guilty in federal court in Washington to conspiring to act as an unregistered agent of Russia, admitting that she worked for more than two years to forge relationships with conservative activists and leading Republicans in the United States.