That’s not really “a lot”, that’s two things. And the second one, you can only give him “credit” for that if you ignore what he was saying at the time he introduced his amendments to the Gang of 8 bill. He claimed at the time that he was being completely sincere and totally wanted the bill to pass, then when it came up now in the campaign, he says he was lying back then and it was a big poison pill scam to kill the bill.
So even if he was “victorious” against the Gang of 8 bill, he’s still a liar. Some big win. :/
He was sincere in wanting the amendments to pass, because he knew they would poison the bill. Democrats wanted nothing less than citizenship and this strategy exposed it.
Jeff Sessions used the same kinds of parliamentary measures and he has explained the strategy that he and Cruz used several times.