Noncolonization formally declared that the Americas were no longer open for colonization. The Monroe Doctrine slapped at the European powers from behind the broadsides of the British navy.
Monroe and Adams combined could not have possibly dreamed of all the results of their doctrine. However, Adams and Monroe did not aim for such impact. They were focused on the issues in their time and in their country, not 150 years in the future in Latin America. The Monroe Doctrine simply set a self-defense barrier for the new nation. However, this document would be resurrected time and time again, evolving and taking on a new identity with each of its appearances in U.S. history. .
There were two minor adjustments to the doctrine that set the premise for future uses. The first of these is the introduction of the Clay Corollary in 1825. With fighting between the European nations, there were disputes as to who would receive the lands of Cuba and Puerto Rico. Secretary of State Henry Clay tried to enforce the Monroe Doctrine by adding his own interpretation, which is also known as the "No Transfer Corollary." He declared "neither Cuba nor Puerto Rico could be transferred to any other powers by Spain." .
The second corollary was created by President James K. Polk. During his term, a wave of patriotism and colonization swept the nation. Texas requested admission into the United States. However, due to conflicts in Washington, Texas was denied admission. As a lost state, Texas sought refuge. Polk, concerned that many interested European nations would begin a foothold in the Americas, used the Monroe Doctrine and stated that "no future European colony or dominion be planted or established on any part of the North American continent." He also said, "We can never consent that European powers shall interfere to prevent such a union [of Texas and the United States] because it might disturb the 'balance of power', which they [European countries] may desire to maintain upon this continent.
