Unlimited Influence Cheat
This glitch will help you make your influence never end. First, you need to have an upgraded Command Center 2 on your home base. Then, you need to find a trader and buy some 9mm or 22mm rounds. Sell them one piece at a time, and then buy them back again one piece at a time.
Do this kind of trading while using Broadcast, which increases your influence by 10%. So for each traded round, you will earn more influence, which will result in a solid profit. You can exploit this every time and never have to worry about your influence ever again.
Note: This glitch was performed on an unpatched version of the game. It is likely to eventually get patched.