There's been just short of 200 higher up's being fired under Obama most of which have come recently.
Before they can replace someone with one of their cronies they first have to get that crony raised to a rank where he or she can be a replacement for the targeted individual. That takes three or four years, if advancements are granted every six months or so and, at the same time, those with equal opportunities, but not "on the team" are moved aside into other positions. That plan takes a LOT of planning, even before becoming President. People do not seem to realize how much of a coordinated effort has been going on for a LONG time to allow Pres. Obama to do what he has been doing the last three or four years. There are a LOT of people embedded in high offices that have an allegiance not to the Constitution but to one world government under a UN that is now totally dominated by Marxist/Socialists/Progressives/Leftists/Democrats ... what ever you want to call them.
How long. Consider this video of Walter Cronkite accepting an award, with congrats from Hillary Clinton, from the "World Federalists Association", one of numerous Marxist fronts.
"First, Americans will have to give up some of their sovereignty, which will be a bitter pill for many Americans...". That would also be unconstitutional, which is why the Left so readily attack the Bill of Rights. If they can infringe that which "shall not be infringed" then the rest of the Constitution is in serious jeopardy. The video juxtaposes well meaning goals against American freedoms, with the obvious implication that freedoms must go. Cronkite also quotes from and approves political statements made by George Soros and other Marxist and attacks Conservatives and Christians as the "source" of all of the problems. Here is what he is fighting for:
http://www.worldfederalistmanifesto.com/The title "World Federalists Manifesto" sound a lot more enticing that the "Communist Manifesto".
Cronkite has held his Socialist views since WWII. Using his fame he has established his own World Federalists award, the "Cronkite Award", which gives "awards" to people with identical views; Jim Lehrer, Charlayne Hunter-Gault, Bob Shieffer, Bill Moyers, Christiane Amanpour, Katie Couric, George Stephanopoulos (twice), Bishop Jane Holmes, several Hollywood Leftists, Bob Costas, Wisconson Public TV (for their impeachment attempt of Scott Walker), Hearst Television (six times! -- wonder why the news is so slanted?) , and many, many others whose names would be instantly familiar.
Other have been given similar "awards". Just do a YouTube search for "Cronkite gets award from" and see other familiar names being given the same award.
Or, do a Google search for "World Federalists Marxism" and find links like
http://www.wnd.com/2011/06/313305/