Alex Isenstadt Add Axios as your preferred source to see more of our stories on Google. Photo: Nathan Howard/Getty Images The White House will offer line-by-line detail on its $1 billion plan for its East Wing renovation project during a Senate Republican lunch on Tuesday afternoon, Axios has learned. Why it matters: The administration is making the case that the project isn't simply about funding a new White House ballroom , as Democrats have claimed , but rather that it will also fund a broad array of new security measures. Secret Service Director Sean Curran will deliver the presentation. The $1 billion would be included in a budget reconciliation package that would also fund ICE and Border Patrol. By the numbers: A one-page document being distributed at the lunch, and reviewed by Axios, will break down the funding costs.…