The United States should propose and enter into a North American Trade Compact with its major neighbors. This would initially include Canada and Mexico; and, in the fullness of time, may expand to the populated Caribbean Sea island nations of Cuba, the Bahamas, the Cayman Islands, Jamaica, Turks and Caicos Islands, Haiti, the Dominican Republic, and the British Virgin Islands.
These nations have ready land and sea access to the United States, including Puerto Rico and the United States Virgin Islands, making them excellent trading partners.
A North American Trade Compact would eliminate all tariffs between these nations and establish a unified market. Unified markets go beyond free trade and eliminate non-trade barriers, such as differences in regulatory requirements. For example: food safety standards and environmental regulations would need to rise in all member nations to a level acceptable to every individual member nation.
Unified markets expand and distribute the processing load of immigration. Immigration into any member follows the protocol and oversight of the member nations as a unit, and anyone authorized to enter and work within one member nation is also authorized to enter and work within all member nations.