Supposedly they knew he was coming but noticed he had a limp and were afraid of shooting a limping man and that it could be a PR disaster.
Well it's a PR disaster none the less. America the Great and yet disabled veterans are left to fend for themselves due to some bureaucratic decision made by someone that you can live off $150 disability payment.
They knew he was coming alright because the White House itself paid this man to run across their lawn.
It's a way to push the liberal Agenda.