Mezue ahịrịokwu na-esonụ: N'afọ 1956, Onye isi ala Dwight D. Eisenhower họpụtara Parsons ka ọ bụrụ onye nnọchi anya United States na Laos, onye isi nke ụlọ ọrụ nnọchi anya US na Vientiane, na Parsons na-enye akwụkwọ ikike ya na October 12, 1956. Dị ka onye nnọchi anya na alaeze Laos n'etiti
Agha Obodo Laotian, Parsons ka a na-amata na nkwado nke ọchịchị Eisenhower nke Royal Lao Government megide Pathet Lao. Ozi ala ọzọ ya na Laos kwụsịrị na February 8, 1958. Parsons gara n'ihu na-akwado iwu Laotian nke gọọmentị na 1959-61, n'oge ahụ ọ rụrụ ọrụ dị ka osote odeakwụkwọ nke State maka East Asia na Pacific Affairs. (Ọ malitere ọrụ na July 1, 1959, wee hapụ ọrụ na March 30, 1961.) N'ịgba akaebe na United States Congress na Machị 1961, Parsons kwuru "ọrụ nke United States na Laos bụ n'ezie nnukwu ọrụ, enwere m olileanya na a gaghị enwe nghọtahie nke nkwụsi ike na nkwụsi ike anyị". N'akwụkwọ ya nke 1965 "A Thousand Days", Arthur M. Schlesinger, Jr. katọrọ nke ọma onye nnọchi anya Parsons na Laos (Schlesinger kwadoro nnọpụiche ndị America n'etiti ndị eze na ndị nnupụisi), na-ekwu na Parsons "na-aghọtaghị ọnọdụ ahụ nke ọma". Parsons azaghị ajụjụ a maọbụ nke ndị ọzọ yiri ya n'ihu ọha.