I disagree with you, Rubio and many other republicans do object to the broad age range of the dream act. Here is this for a reference, words uttered by Senator Rubio himself according to Daniela Peleaz when she met him in March.


Daniela Pelaez, the North Miami Senior High valedictorian whose possible deportation caught national attention, met with Rubio in Washington, D.C. last month and told Univision News that the senator was also concerned that the age groups covered by the original DREAM Act were too broad.
“Those were the biggest concerns for him,” she said.

Immigration-reform advocates said they were skeptical that the election-year effort would offer a substantive solution.
“Will the Republican-led DREAM Act in an election year right the wrongs of Republican anti-immigrant legislation like Arizona and Alabama’s laws? We’re skeptical,” said Ali Noorani, Executive Director of the National Immigration Forum."

http://univisionnews.tumblr.com/post...tive-dream-act


With the man even saying these words, anti-illegal immigration organizations like FAIR also wanting a lower age limit, and Rubio primarily just using this bill as a political ploy so that he can showcase democratic failure on the issue, as well as to advance his own party, mark my words, I feel very strongly that there will be a lowered age limit.[/quote]

Well he has to deal with Reid eventually. This is what Reid's spokesman had to say.

“