History.com describes the Monroe Doctrine as folllows:

The Monroe Doctrine, first outlined in a speech to Congress in 1823, had President James Monroe warning European powers to not attempt further colonization, military intervention or other interference in the Western Hemisphere, stating that the United States would view any such interference as a potentially hostile act. Over the centuries, the Monroe Doctrine policy has become a cornerstone of U.S. diplomatic and military policies.

In recent years, that policy has been somewhat ignored. That changed on January 20th of this year.

On Sunday, Legal Insurrection reported:

Panama has decided not to renew its memorandum of understanding with China on the Belt and Road Initiative, marking a significant shift in its foreign policy. The move follows increased U.S. pressure, as Washington works to curb Beijing’s growing influence in Latin America.

This decision came as Senator Marco Rubio visited Panama to discuss key issues like the Panama Canal’s operations and migration through the Darien Gap, a critical transit point for migrants heading to the U.S.

This is definitely a move in the right direction. I would like to say that the article is incorrect in describing Marco Rubio as a Senator–he has been confirmed as Secretary of State.