A burgeoning local movement to push state and federal government to reconsider the Tysons tunnel has not swayed skeptics, who worry the plan to burrow Metrorail under the urban area will jeopardize hundreds of millions in federal dollars now committed to the rail project.

The pro-tunnel movement is undoubtedly picking up political steam, however, thanks to a well-funded effort by the Greater McLean Chamber of Commerce. The chamber, organized under the banner of TysonsTunnel.org, won the support of the Fairfax County Board of Supervisors on Monday thought the board stipulated that federal funds should not be risked, no matter what the outcome.