I don't honestly know myself...looking back and forth between the two version it doesn't seem like its been changed much, but I'm not a lawyer, so I'm no expert. On the practical side of things, I haven't seen any real changes to demonstrations this year as to opposed to how they were policed and conducted before this bill went into effect, so I'm not sure what the difference is in practical terms. Either way, if it hasn't been struck down in a year, its not likely to be struck down.
From what I researched, it looked like it passed congress with a veto-proof majority, so though it could have been vetoed by the president, it would have been passed either way...not sure how I feel about that, I can see both good and bad scenarios for a "veto-proof" legislation.