Former U.S. Sen. Bob Dole, acting as a paid lobbyist for Taiwan's government, connected Donald Trump's staff with Taiwanese officials in advance of an unprecedented phone call between the U.S. president-elect and Taiwan's president.

Documents filed by Dole's firm, Alston & Bird, show that Dole, a registered foreign agent for the Taiwan Economic and Cultural Representative Office, had been maneuvering behind the scenes over the last six months to build a relationship with Taiwan's government and Trump transition officials.

Dole led a Taiwanese delegation to the Republican National Convention and coordinated with Trump campaign officials on taking part in a trip to Taiwan. He also arranged a meeting between the Taiwanese diplomats and Trump campaign officials.