By the time of Welch’s death in 1985, the Birch Society’s membership and influence had dramatically declined because partly of the ending of the Cold War, but the UN’s role in the Gulf War and President George H. W. Bush’s call for a ‘New World Order’ appeared to many JBS members to validate their claims about a “One World Government” conspiracy. (See, for example, The New American February 26, pp. 22–23). Growing right-wing populism in the United States helped The John Birch Society position itself for a comeback, and by 1995 its membership had grown somewhat to more than 55,000 though that number is unofficial as the Society does not disclose its membership statistics.
After that time period, the John Birch Society started a campaign to impeach President Bill Clinton for alleged connections with Chinese interests and on charges of treason and bribery.  Within months of the Society’s call for impeachment, news of the Monica Lewinsky affair broke, and the Society’s charges were overshadowed by media coverage of Lewinsky and Clinton. The President was eventually indicted on impeachment charges but the charges were different than the Society had hoped to bring. Clinton, however, was not convicted by the Senate because of the tenuous nature of the charges and the lack of necessary votes. Nevertheless, the impeachment campaign’s relative success bolstered the Society and its public knowledge, membership, publication circulation, and finances.
During the 1990s (with a brief pause to work on the Clinton impeachment campaign) and in the first decade of the 21st century, the Society has opposed free-trade agreements such as the North American Free Trade Agreement (NAFTA), Central American Free Trade Agreement (CAFTA), and the newly proposed Free Trade Area of the Americas (FTAA). CAFTA won a two-vote victory in the House (217–215), but the Society predicts the FTAA will have an even more difficult time.
In recent years, The John Birch Society has been just as critical of President George W. Bush as it has been of Democratic presidents, accusing the Bush administration of advocating and carrying out acts of torture against suspected terrorist leaders during the War on Terror. In a 2005 online poll, the organization’s membership voted for President Bush’s impeachment,  citing issues such as the USA PATRIOT Act, the proposed sell out of U.S. Seaports to Dubai Ports World,  and recent allegations against the Bush administration concerning domestic telephone surveillance of suspected terrorists operating within the United States. These were cited as evidence of Bush’s lack of regard for the Constitution.
The JBS continues to press for an end to U.S. membership in the United Nations. As evidence of the effectiveness of JBS efforts, the Society points to the Utah legislature’s resolution calling for U.S. withdrawal, as well as the actions of several other states where the Society’s membership has been active. The Birch Society repeatedly opposed overseas war-making although it is strongly supportive of the American military. It has issued calls to “Bring Our Troops Home” in every conflict since its founding including Vietnam (it wanted a quick win and exit there after the conflict had already started rather than a simple losing pullout). The Society also has a national speakers’ committee, called American Opinion Speakers Bureau (AOSB), and an anti-tax committee called TRIM (Tax Reform Immediately).