Nominating Harris as the presidential nominee provides strategic advantages under Federal Election Commission rules. As she is part of the campaign committee, if she becomes the nominee, the transfer of cash from the Biden campaign account allows her direct access to all the party's raised funds. However, if Harris is not the nominee, the money can still be accessed by creating a super PAC, but this means losing direct control and facing consequences such as higher advertising costs. Therefore, nominating Harris streamlines the process and ensures better rates for campaign expenses.