Yeah, he's a very serious contender ...
Rubio’s turning on his own bill would be an extraordinary turn of events. After playing a major role in drafting the legislation, Rubio has been its public face since then, making countless appearances on television, radio, and in print to gather support for the legislation. What has changed that would mean he would not vote for his own bill? If anything, the security measures in the bill were slightly strengthened in the Senate Judiciary Committee; the bill’s original intention to apply new security provisions only to “high-risk” sectors of the U.S.-Mexico border was expanded to apply to all sectors.
So it would be hard to argue that the Judiciary Committee changed the bill in ways that would make it unacceptable to Rubio. But now he says he will vote against the bill approved by the committee, unless major changes are made. It is hard to tell if Rubio really disagrees with the substance of the legislation approved by the committee — he suggested to Hewitt that he would vote against the bill because it wouldn’t pass without the changes, not because he objected to particular passages in the bill — but the result would be that the principal author of comprehensive immigration reform would vote against it in the Senate.
http://washingtonexaminer.com/rubio-i-will-vote-against-my-own-immigration-bill-unless-changes-are-made/article/2531180
Rubio’s turning on his own bill would be an extraordinary turn of events. After playing a major role in drafting the legislation, Rubio has been its public face since then, making countless appearances on television, radio, and in print to gather support for the legislation. What has changed that would mean he would not vote for his own bill? If anything, the security measures in the bill were slightly strengthened in the Senate Judiciary Committee; the bill’s original intention to apply new security provisions only to “high-risk” sectors of the U.S.-Mexico border was expanded to apply to all sectors.
So it would be hard to argue that the Judiciary Committee changed the bill in ways that would make it unacceptable to Rubio. But now he says he will vote against the bill approved by the committee, unless major changes are made. It is hard to tell if Rubio really disagrees with the substance of the legislation approved by the committee — he suggested to Hewitt that he would vote against the bill because it wouldn’t pass without the changes, not because he objected to particular passages in the bill — but the result would be that the principal author of comprehensive immigration reform would vote against it in the Senate.
http://washingtonexaminer.com/rubio-i-will-vote-against-my-own-immigration-bill-unless-changes-are-made/article/2531180