@georgeob1,
It is a political fact of life that the bureaucracy gets "packed" by place-holders who are usually sympathetic to the administration which has held office when they joined. Mr. Obama was in office for eight years, so the effect was significant. By and large, however, the bureaucracy has been Republican-leaning. Mr. Reagan and the elder Bush were in office for twelve years, followed by eight years of Mr. Clinton, followed by eight years of the younger Bush, and then eight years of Mr. Obama. In forty years, there were sixteen years of Democratic administrations, and twenty-four years of Republican administrations (prior to the arrival of Plump). Most people don't serve or hold their places for forty years, however--in the thirty years before January, 2017, there were fourteen years of Republicans and sixteen years of Democrats. Roughly, that was a balance.
But Plump came in and began appointing some truly idiotic people, and others who were casually corrupt. Wilbur Ross was a no-brainer: he structured the deals from banks that allowed Plump to avoid personal bankruptcy in the 1990s, and brokered real estate deals for Plump and Jared Kushner. He is not technically corrupt, but he bailed out Plump in four failures of Plump's casinos and hotels, and made the deals with allowed Plump to avoid personal bankruptcy and to sell his name to those who took over his businesses. Ross was a registered Democrat, with a long history of donations to the party and Democratic candidates, until after the 2016 election, when he joined the Republicans.
Ryan Zinke, his first Secretary of the Interior, eventually left under a cloud of accusations, after an IG investigation, saying it wasn't worth the financial and moral cost to his family. Betsy Devos, his Secretary of Education has no allegations of personal corruption (that I know of), but when Plump was separating children from their parents at the border, her husband's cousin had many of those children directed to her shelter, to the tune of $750 of taxpayer money per night. Zinke and Devos are, as far as I know, life-long Republicans.
John Kelly, first his Secretary of Homeland Security and then the White House Chief of Staff, had conflict of interest charges brought against him, just as did Zinke and Devos. He also made some breathtakingly ignorant and often factually false remarks about the American civil war, especially stupid against the backdrop of the Charlottesville debacle. By and large, though, Kelly was the most capable of his early advisers.
I suspect that Plump, like most men and women who have run or attempted to run their own enterprises, is not good at taking advice, and doesn't really listen to advisers. It is only within the last year, at most 18 months, that he seems to have been getting,
and actually listening to intelligent, experienced political advice. It's fortunate for him that the Democrats were stupid enough to go ahead with impeachment (against Pelosi's advice--they had to drag her, kicking and screaming behind the scenes, into that idiocy). It's the best thing to happen to him in this administration, with a view to re-election.