THIS article about the resignation of White House Press Secretary Scott McClellan is the latest in a series of staff lineup changes in the Bush Administration.

HERE is some info about senior policy coordinator Karl Rove.

And, HERE is the 411 on Secretary of Defense Donald Rumsfeld.

What’s the deal? Why are folks asking to leave, leaving, or shifting their roles at the White House? And we’ve still got about a year and a half until the next presidential election, folks.