show the flag
v.— «One of the most time honored—and simplest—methods of lobbying is called “showing the flag.” It works this way: When a critical vote is imminent in Congress, representatives of contesting points of view show up and make sure that they’re seen by lawmakers. By merely being present—and in that way, showing the flag for their cause—they remind decision makers of their positions and impose an implicit pressure.» —“Realtors Wield the Power of Intimidating Views” by Jeffrey H. Birnbaum Washington Post Oct. 4, 2004. (source: Double-Tongued Dictionary)