Honest question. Why would Republicans not support this bill?
Good question. And completely unanswerable based solely on the description of the bill here on /.. (How DO you properly end a sentence that ends with '/.'?)
But if you read the bill (pdf), you might find some clues. For example:
(a) IN GENERAL. -- Except as provided in subsection
(b), no agency may mandate that a manufacturer, developer, or seller of covered products design or alter the security functions in its product or service to allow the surveillance of any user of such product or service, or to allow the physical search of such product, by any agency.
How broad can you get with your paintbrush? An interesting interpretation of this might be that the FCC regulations for emissions no longer apply, because a cellphone can be "surveilled" by following the signals it emits using the FCC standards. E911 info is FCC mandated surveillance, as well, in very broad terms.
Maybe the "exception" paragraph?
(b) EXCEPTION. -- Subsection (a) shall not apply to mandates authorized under the Communications Assistance for Law Enforcement Act (47 U.S.C. 1001 et seq.).
So this law is already watered down by CALEA. And what is a "covered product"? Here you go:
(2) the term "covered product means any computer hardware, computer software, or electronic device that is made available to the general public.
Emphasis mine.
Or maybe it will be voted down when it becomes an amendment, as it was in the house?
In the House of Representatives, Rep. Zoe Lofgren (D-CA) took up the issue of government encryption rules earlier this year. She passed an amendment to the annual defense funding bill ...
She didn't actually pass the amendment, she proposed the amendment and the house passed it. In any case, it was a rider to an otherwise unrelated bill. It is a standard ploy to attach unrelated things, and when one side votes against the part they don't like, they get painted in pubic as being against the other part they could accept. That's why there is talk of a "line item veto" from time to time, to remove the President from the "all or nothing" game.
Or maybe they'll vote against it because of what it is: a political game played by a master gamesman, who chose now to do something when he could have done it long ago. All this NSA stuff that got leaked -- he knew it before it got leaked. He's on the committee that has regulatory oversight to that agency. Did he do anything when he found out what they were doing? No.