This is the layout for the governments:


United States:

Executive Branch:

President:
When the President is presented with a bill by Congress, he can:
Sign it so it becomes a law
Veto it so it does not become a law
Director of Foreign Policy
Negotiates treaties through the Department of State
These treaties only become law if the Senate agrees
Commander in Chief of the Army
Once the USA is at war, the President commands the army
He mainly does this through the Department of Defense
Appoints Cabinet Members
Appoints cabinet members with approval of the Senate
Including the Secretary of State and Secretary of Defense
Nominate Federal Judges
Can nominate the Supreme Justice with Senate approval
Vice President:
Becoming President
Becomes President upon death, removal or resignation of President
House of Representatives Tie Breaker
Breaks a tie if there is one in the House of Representatives
Counts Election Votes
Counts the votes for President, Senate and House of Representatives
Secretary of State
Foreign Advisor
Advises the President on all foreign matters
Negotiates Treaties
Negotiates treaties and other foreign deals
International Organizations
Participates in international organizations or meetings
Creates Embassies
Creates and manages embassies in foreign countries
Secretary of Defense
Military Advisor
Advises the President on all military matters
Second Head of Military
Controls armies during war, second to the President

Judicial Branch:

Chief Justice:
Block Executive Power
Block an action of the President if they say its unconstitutional
Block Legislative Power
Block a law if they say its unconstitutional
Criminal Judge
Judges punishment if a citizen does something wrong

Legislative Branch:

Senate:
Make a Law
Can pass a bill to go on to the House of Representatives
Approve a Law
Can approve a bill passed from the House of Representatives
Declare War
Can declare war with full support from the House of Representatives
Cabinet and Court Approval
Has to approve the President's selection for Justice and Cabinet Officials
House of Representatives:
Make a Law
Can pass a bill to go on to the Senate with majority
Approve a Law
Can approve a bill passed from the Senate with majority
Declare War
Can declare war with full support from the Senate
Impeach Officers
Can impeach President, Justice or Cabinet with majority

Canada:

Executive Branch:

Prime Minister:
Appointments
Appoints all other members of the government after his election
Army Leader
Controls the army through the Minister of National Defense
Runs Country
Generally the PM just runs the entire country
Minister of Foreign Affairs:
Advises the PM on all foreign matters
Negotiates Treaties
Negotiates treaties and other foreign deals
International Organizations
Participates in international organizations or meetings
Creates Embassies
Creates and manages embassies in foreign countries
Minister of National Defense:
Military Advisor
Advises the PM on all military matters
Second Head of Military
Controls armies during war, second to the PM

Legislative Branch:

Parliament:
Make a Law
Can make a law

Judicial Branch:

Chief Justice:
Criminal Judge
Judges punishment if a citizen does something wrong

Mexico:

Executive Branch:

President:
Appointment
Appoint secretary of foreign affairs and national defense with senate approval
Control The Army
Make sure the country is well protected
Declare War
Declare war with Senate and Chamber approval
International Treaties
Create international treaties with senate approval
Foreign Affairs
Conduct foreign affairs through the Secretary of Foreign Affairs
Secretary of Foreign Affairs:
Foreign Advisor
To advise the President on all foreign matters
Foreign Relations
To conduct foreign relations under the President
Secretary of National Defense:
Army
To control the army, second only to the President
Military Advisor
To advise the President on all defense matters

Judicial Branch:

Chief Justice:
Criminal Judge
Judges punishment if a citizen does something wrong

Legislative Branch:

Senate:
Make a Law
Can pass a bill to go on to the Chamber of Deputies
Approve a Law
Can approve a bill passed from the Chamber of Deputies
Declare War
Can declare war with full support from the Chamber of Deputies
Cabinet and Court Approval
Has to approve the President's selection for Justice and Cabinet Officials
Chamber of Deputies:
Make a Law
Can pass a bill to go on to the Senate with majority
Approve a Law
Can approve a bill passed from the Senate with majority
Declare War
Can declare war with full support from the Senate
Impeach Officers
Can impeach President, Justice or Cabinet with majority

Term Limits:

United States:

President - 12 turns, 2 term limit
Vice President - Only with the current President, 2 term limit
Secretary of State - Only with the current President, Infinite term limit
Secretary of Defense - Only with the current President, Infinite term limit
Chief Justice - For life, Infinite term limit
Senate - 18 turns, Infinite term limit
House of Representatives - 18 turns, Infinite term limit

Canada:

Prime Minister - 12 turns, Infinite term limit
Minister of Foreign Affairs - Only with the current PM, Infinite term limit
Minister of National Defense - Only with the current PM, Infinite term limit
Chief Justice - For life, Infinite term limit
Parliament - 8 turns, Infinite term limit

Mexico:

President - 18 turns, 2 term limit
Secretary of Foreign Affairs - Only with the current President, 4 term limit
Secretary of National Defense - Only with the current President, 4 term limit
Chief Justice - For life, Infinite term limit
Senate - 12 turns, 4 term limit
Chamber of Deputies - 12 turns, 4 term limit

Amount per role

United States:

President - 1
Secretary of State - 1
Secretary of Defense - 1
Vice President - 1
Chief Justice - 1
Senate - 1
House of Representatives - 2

Canada:

Prime Minister - 1
Minister of Foreign Affairs - 1
Minister of National Defense - 1
Chief Justice - 1
Parliament - 1

Mexico:

President - 1
Secretary of Foreign Affairs - 1
Secretary of National Defense - 1
Chief Justice - 1
Senate - 1
Chamber of Deputies - 2

Presidential Election Timelines:

United States:

Turn 7 - Candidates Announce Their Running
Turn 8 - Candidates Start Campaigning
Turn 9 - Candidates File For Primaries
Turn 10 - Primaries Occur
Turn 11 - Finalists Campaign
Turn 12 - Presidential Election

Canada:

Turn 9 - Candidates Campaign
Turn 10 - Primaries Occur
Turn 11 - Finalists Campaign
Turn 12 - Prime Minister Election

Mexico:

Turn 15 - Candidates Campaign
Turn 16 - Primaries Occur
Turn 17 - Finalists Campaign
Turn 18 - Presidential Election