Looks like OAS and Pompeo's interest were BOUGHT! Look at the services rendered language noted in the contract between Mercury agreed to provide to PPP/C:
"Consultant will provide strategic consulting and management services ("Services") specific to issues facing the Client in the areas of government relations and issues management. The Services shall include, but are not limited to, representing the Client before, and arranging meetings with the Executive Branch and the Congress of the United States, the Organization of American States, and think-tanks in connection with issues relating to the anticipated general and regional elections to take place in the Cooperative Republic of Guyana.
Consultant and Client will comply with the provisions of all federal, state, local and international laws, regulations, and requirements pertaining to the performance of Services under this contract."
This was planned from the very beginning!