On April 29, the self-described “three musketeers” of tech in Washington stood at a wooden podium in the National Press Club. The three men — incoming Under Secretary of State Jacob Helberg, 137 Ventures partner Christian Garrett, and Founders Fund partner Delian Asparouhov, who coined the “musketeers” label — were kicking off their fourth annual Hill and Valley Forum, a conference they created with the purpose of bringing the Capitol and Silicon Valley closer together. Helberg, in a navy suit a...