Laurence Francis Rooney III (born December 4, 1953) is an American politician and diplomat who was a U.S. representative for Florida's 19th congressional district from 2017 to 2021. A Republican, he served as the U.S. ambassador to the Holy See from 2005 until 2008. Rooney earned a 95.90% lifetime score from the American Conservative Union.Rooney is chairman of Rooney Holdings, formerly known as Rooney Brothers Company, an investment and holding company based in Naples, Florida. With a net worth of $22.6 million, Rooney had been one of the wealthiest members of Congress.In October 2019, Rooney announced that he would not run for re-election to Congress in 2020. He was succeeded by state representative Byron Donalds.