@engineer,
Federal employees are overpaid, unionized and mostly free of any accountability for the quality of work they do or don't do. Their job security is nearly absolute, without regard to their performance in it. The real estate market in the Washington DC area is one of the most expensive in the country, largely a result of the plethora of overpaid bureaucrats ( and corporate lobbyists) who have expanded this urban area so rapidly. We have, over the past four decades, grown a huge bureaucratic state apparatus that is visibly eroding the democratic processes or legislative effectiveness of our legislature.
Finally, President Trump has little reason to reward this emerging fourth branch of our government, and, with our currently very low inflation rate, there is no economic reason for any raise greater than 1%.