Donald Trump routinely blasts his political foes for pay-to-play politics and crony capitalism and corruption .

But Trump is now rewarding some of his biggest campaign bankrollers with unparalleled access, influence, prestige and power in his presidential administration-in-waiting, according to a Center for Public Integrity analysis of new campaign finance disclosures filed with the Federal Election Commission.

In all, 18 ultra-wealthy Americans the majority are billionaires whose fortunes are greatly affected by government decisions contributed at least $1 million to the Republicans presidential campaign and political efforts supporting Trumps bid, the Center for Public Integritys analysis shows.

At least one person on this list, former World Wrestling Entertainment executive Linda McMahon, is slated to serve in Trumps Cabinet: Trump this week tapped McMahon to lead the federal governments Small Business Administration. In addition to spending $6.2 million to support Trumps presidential effort, she and husband Vince McMahon have together donated millions of dollars to Trumps scandal-plagued charitable foundation .

Trump is also nominating six-figure contributors to cabinet-level positions: billionaire philanthropist Betsy DeVos as education secretary , restaurant mogul Andy Puzder as labor secretary and billionaire investor Wilbur Ross as commerce secretary . And four days before Election Day, Department of Housing and Urban Development secretary nominee Ben Carsons old presidential campaign committee likewise gave a pro-Trump super PAC $100,000.

Another top backer, hedge fund manager Robert Mercer, gave $2 million to a pro-Trump super PAC he helped establish with his daughter, Rebekah Mercer, called Make America Number 1.

The father-daughter duo helped convince Trump to overhaul his campaign leadership in August and install operatives with close ties to the Mercer operation. They are now poised to play a leading role in a new organization designed to advance Trumps legislative agenda. Rebekah Mercer is also a member of Trumps presidential transition team executive committee.

In a sign of how much the Mercers have endeared themselves to the president-elect, Trump, on Saturday, made a surprise appearance at the Mercers Villains and Heroes -themed Christmas costume party on Long Island, New York.

Then theres Silicon Valley investor Peter Thiel, who gave $1 million to the Mercer-led, pro-Trump Make America Number 1 super PAC during the presidential campaigns final days, new federal campaign finance disclosures show.

One of the few tech titans to openly speak about his support for Trump, Thiel is now on the executive council of Trumps presidential transition team.

Joe Ricketts, the billionaire founder of online brokerage TD Ameritrade who initially funded an anti-Trump super PAC, also earned Trumps favor after contributing $1 million in September to pro-Trump super PAC Future45.

Ricketts son, Todd Ricketts, helped run Future45. Todd Ricketts is now Trumps nominee for deputy commerce secretary .

Trump has given his No. 1 and No. 2 overall financial backers casino tycoon Sheldon Adelson, and his wife, Miriam Adelson new jobs since winning the presidency: Theyre finance vice-chairmen of Trumps inaugural committee, which is working to raise tens of millions of dollars to pay for his inauguration. Its an event that itself promises top donors posh perks and exclusive access to Trump and his administration.

Sheldon Adelson the chairman and CEO of the Las Vegas Sands Corp. waited until late October to put big dollars into backing Trump. But both he and Miriam Adelson ultimately invested $10.2 million each into pro-Trump groups. The Adelsons are strong supporters of Israel and opponents of online gambling.

During the Republican presidential primary, Trump had accused Adelson of attempting to use his wealth to control Sen. Marco Rubio, R-Fla., who was also seeking the GOP presidential nomination.

Representatives from Trumps transition team did not respond to requests for comment.

Trump has promised to drain the swamp in Washington, D.C. an allusion to what he says is a capital city controlled by corrupt, self-interested lobbyists, political operatives and businesspeople.

On one hand, Trump can argue that many of his top donors are not creatures of Washington, D.C., but rather, successful outsiders he trusts to reform the federal government, said Meredith McGehee, chief of policy, programs and strategy for campaign finance reform organization Issue One.

On the other hand, Trump offering top donors key postings and intimate access raises the question of whether they bought their positions, she said.

In the end, Trump was the biggest single bankroller of his campaign. He ultimately contributed $66.1 million of his own funds to his presidential campaign about 19 percent of the $339 million he ultimately raised for the primary and general elections, federal disclosures show.