Donald Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE's call with Taiwanese President Tsai Ing-wen was organized by Bob Dole, a former Republican senator and the party's 1996 presidential nominee, The Wall Street Journal reports.

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Dole told the Journal that the law firm he is affiliated with does work with the Taipei Economic and Cultural Representative Office in the U.S.

“It’s fair to say that we may have had some influence,” he said.

Trump's Friday conversation broke decades of U.S. protocol.

For several decades, the U.S. has followed the "One China" policy that doesn't acknowledge Taiwan as a nation, but instead goes along with China's view that Taiwan is a province that broke away.

President Jimmy Carter formally declared the communist People's Republic of China the sole government of China in 1979, which ended formal U.S. diplomatic relations with the nationalist government on Taiwan.