On the US Map (not the map of the battle), press Start to go into the Options Menu, then get into the Cheat Menu, then enter X, B, B, X, B. This Code makes sure that your Political Reputation is raised by 1 towards the Green Level (Good Level). Note: You might have to enter this code more than once.
Political Reputation raised by 1 towards the Green Level - X, B, B, X, B
Skip campaign mode week
Press X, Y, X, B, A at the cheat menu to skip to the next campaign mode week. Additionally, your faction will be the only one that can attack a territory until your turn ends.
Take control of individual territories
Start a campaign and hit start, then go to cheats:
BXXAX - Arizona Territory
BXXAY - Oklahoma Grasslands
BXXYB - New Mexico
BXXYA - Great Basin
BXXYX - Northern California
BXXYY - Southern California
BXXBB - Great Plains
BXXBA - Great Lakes
BXXBX - Dakotas
BXXBY - Central Heartland
BXXAA - Northern Texas
BXXAB - Southern Texas
BXXXA - Arcadia Plains
BXXXB - Northern Cascades
BXXXX - Southeastern Cascades
BXXXY - Central Cascades
BXYYA - Northern New England
BXYYB - Eastern Shenandoah
BXYYX - Ohio Valley
BXYYY - New York
BXYXA - Carolinas
BXYXB - Florida
BXYXX - Mississippi Delta
BXYXY - Cumberlands
Unlimited money
Press X(2), A(2), Y at the cheat menu for $1,000,000.
Win Civil War: Campaign Mode
On the US Map (not the map of the battle), Press Start to get into the options menu, then go into the Cheat Menu, then enter X, B, A, B, Y. This code makes sure your faction has won the civil war part of the game and unified the continental US. Note: Your faction still has to fight against the Russians in the Battle of Alaska (The Final Battle of the game).