Executive Branch Conflict of Interest Act This bill revises ethics requirements and modifies provisions related to conflicts of interest involving certain federal government employees. Specifically, the bill expands restrictions on certain federal government employees' acceptance of compensation from nongovernment sources, generally requires certain federal government employees to recuse themselves from any official action that would provide a direct and substantial pecuniary benefit for a recent former employer or client, generally prohibits such an employee from participating in matters that involve an individual or entity with whom the employee is negotiating future employment, prohibits a federal government employee from participating in a procurement involving a contractor that had recently employed that employee, and expands restrictions on lobbying by certain former federal government employees.