At noon on July 11, 1794, President George Washington met a delegation of Chickasaws, including Piominko and George Colbert, at the President's house in Philadelphia – the United States capitol at the time. Henry Knox, U.S. Secretary of War, sent a speech to Washington praising the Chickasaws for fighting hostile tribes. Chickasaw warriors, led by Piominko, helped American soldiers defeat opposing tribes north of the Ohio River.
Ten days after the meeting, Washington provided Piominko with a written document confirming the boundaries of the Chickasaw Nation (identical to the 1786 Treaty of Hopewell) and reaffirming that the territory was under the protection of the United States.