"Perhaps Rubio is unfamiliar with an amendment strategy when fighting legislation because he has been in very few firefights for the cause of conservatism since his election to the Senate. "
"As highlighted in his Conservative Review profile, Rubio was promoting his bill as ‘enforcement first’ even as he was voting down amendments to make the bill do just that. It’s not just that Rubio changed his position to “enforcement first,” it’s that he touted that Gang of 8 bill for months as doing just that. He opposed the following amendments:
A provision to ensure that the border is secured before any amnesty is granted. (Senate.gov)
A provision requiring completion of the reinforced double-layered border fencing. He was one of only five Republicans to do so. (Senate.gov)
A provision requiring that a visa tracking system be implemented before any amnesty is granted. (Senate.gov)
A provision that would require congressional votes affirming the border has been secured before the granting of temporary legal status. (Senate.gov)
As noted in our guide to political conversions, a legitimate recent convert to a cause is usually the most zealous in championing the issue unprompted by political pressure. When Cruz was fighting Obama’s executive amnesty, the border surge, sanctuary cities, the release of criminal aliens, the Islamic refugee scheme, and homegrown terror threats via immigration - using all his platforms on committee, floor speeches, and in the media - where was Rubio? Until Breitbart called him out for not supporting a single enforcement effort, Rubio never even signed onto the effort against sanctuary cities.
https://www.conservativereview.com/commentary/2015/11/cruz-fought-amnesty-rubio-fought-conservatives#sthash.aZZ3ApEy.dpuf"