But really, why was this necessary?
I don't think necessity factors into it. It's something that'll help maintain the status quo and now's a good time to do it since Americans still think they're free. Why not do it?
That doesn't necessarily imply some huge conspiracy, however. It could easily be as simple as the Secret Service told a congressman that protestors were a pain in their ass and they'd like permission to due away with them. I'm sure it's something they've been wanting for the last 100 years, and now it's something they can have.
the statute does not require the government to prove intent
As usual, Fox just makes shit up:
(a) Whoever--
(1) knowingly enters or remains in any restricted building or grounds without lawful authority to do so;
(2) knowingly, and with intent to impede or disrupt the orderly conduct of Government business or official functions, engages in disorderly or disruptive conduct in, or within such proximity to, any restricted building or grounds when, or so that, such conduct, in fact, impedes or disrupts the orderly conduct of Government business or official functions;
(3) knowingly, and with the intent to impede or disrupt the orderly conduct of Government business or official functions, obstructs or impedes ingress or egress to or from any restricted building or grounds;
But either way, yeah, it's pretty fucking ridiculous.
First off, it's sub-section 1 that's the trouble spot, since it's the SS that gets to determine what's restricted. Much was made of the removal of "with intent" from that section. Secondly, that article was an op-ed piece written by a retired Superior Court judge from New Jersey.