The Federalist Society: A threat to America?

It appears that the current administration favors people who are members of the Federalist Society when making appointments to public office. What is the Federalist Society? What is its role in American politics and government? What does it hope to accomplish? Does it exist to take control of this country by embedding its members in key positions throughout all three branches of government? How many of its members hold positions on the U.S. Supreme Court? Why does the Justice Department seek to place members of the Federalist Society into positions as U.S. Attorneys? Is it a threat to America?