James VandeHei Jr., 21, is a rising senior at High Point University and a Division I soccer player. He brings us the backstory of an app that launched Thursday (and is moving up the news chart): My dad's letter on AI , which dropped in Axios Finish Line in January, came right as I was starting to go deep into the technology myself. Along with two buddies — Charlie Stallmer at Holy Cross and Chris Brophy at the University of Denver, also college juniors — I was already thinking about building an app . The idea: After a summer on the Hill, the three of us had the same realization. Voting records, campaign finance and legislative activity are technically public — but practically buried. Even on the official Congress.gov , breaking down a single bill means sifting through legislative language no normal person should have to translate. Politik ("Congress in Your Pocket") is a nonpartisan, data-driven guide to how your leaders vote and where they get their campaign funds.…