Apologies if I've missed something in the rules.
We played yesterday and the president drew lots and lots of quorum cards. Then, when a centurion got on board, we got rid of it with the 'Authorize Brutal Force' card - which it looks like goes to the discard pile when used.
A few turns later, another centurion turned up, so we kept exec ordering the president who took 2 actions to effectively draw lots more Quorum cards. This got the 2nd 'Brutal Force' card, so that went too.
However, we now have only 1 card left in the Quorum deck and about 4 in the discard. So anytime a centurion turns up, the president can just draw some Quorum cards, get the Brutal Force back, and the centurion is gone again.
We thought this may be a bit of a loophole / flaw and makes centurions pretty useless.
Our only thought is there should be a hand-limit on Quorum cards.