While Won Pat was Guam's delegate to the US Congress his efforts weren't limited to his constituents on Guam. During his tenure as delegate to the U.S. Congress, he was instrumental in helping what are now the Commonwealth of the Northern Mariana Islands; the Federated States of Micronesia, comprising the island states of Kosrae, Pohnpei, Chuuk, and Yap; the Republic of the Marshall Islands and the Republic of Palau achieved more political self governance through the dismantling of the Trust Territory of the Pacific Islands.