12/21/1979
https://www.presidency.ucsb.edu...
"To the people of the United States Pan American Day commemorates the importance of mutual respect and cooperation which characterize the Inter-American system."
"It is equally clear that the Congress intended to permit career members of the Senior Executive Service to accept Presidential appointments while retaining full SES career status and SES benefits."
"I do hereby proclaim Saturday, April 14, 1979 as Pan American Day and the week beginning April 15, 1979 as Pan American Week."
"The United States, on Pan American Day 1979, salutes the other nations of this hemisphere, and pledges its solidarity with them."