There are exceptions in the act for almost everything, 2604 is perhaps the most comprehensive. They should fight it only because it creates a lot of paper work.

Sec. 2604. Emergency situation exception

(a) Emergency Situation Exception- Notwithstanding any other provision of this chapter, any investigative or law enforcement officer, specially designated by the Attorney General, the Deputy Attorney General, the Associate Attorney General, or by the principal prosecuting attorney of any State or subdivision thereof acting pursuant to a statute of that State, may intercept geolocation information if--
(1) such officer reasonably determines that an emergency situation exists that--
(A) involves--
(i) immediate danger of death or serious physical injury to any person;
(ii) conspiratorial activities threatening the national security interest; or
(iii) conspiratorial activities characteristic of organized crime; and
(B) requires geolocation information be intercepted before an order authorizing such interception can, with due diligence, be obtained;
(2) there are grounds upon which an order could be entered to authorize such interception; and
(3) an application for an order approving such interception is made within 48 hours after the interception has occurred or begins to occur.

Sad but true

Heres my outdated list, still getting to grips with this list
Drivers or os layer : C, C++
Scripting : bash, python, perl
Applications : Visual Basic, Java, XML, tcltk, gtk
Web : HTML 4+5 Javascript, jsp PHP
Databases : mysql, mssql, sqlite
IDE : Eclipse, visual studio express
Others: haskell, matlab, opengl
Servers: tomcat, apache

Also forgot the most important thing, ask the CIO, why now?

Maybe he is interested in reducing costs and see this as a quick grab at low lying fruit. You could then discuss limtied implementations, part of the project rather than whole of the project

Think the original poster has managed to stir up a religious debate.

The job is to manage/execute/spec the project.

Like it or not linux is an OS, its not going to earn your company money. Its support.

So put in in terms of money:
1. What are the switching costs and reduced:
          a. what are the scripts you need to rewrite - in terms of man hours, anticipated outsourcing costs
          b. What standard tools used in the organization will break, great if it is none but any experienced migrator will tell you otherwise
          c. What is the cash saved in the life cycle of the project and what costs are saved in the extended life
          d. What additional sales expected?
2. What is the value of your stream of updates( you have data, quantify it in terms of $$$)
        a. In Engineering terms what is the cost of remedy and what is the cost of defect prevention (Past data where a patch is not present and how much activity the repair cost the organization, how much does it cost the organizaiton)
3. Disaster recovery
        a. What happens if the OS becomes a blocker (e.g. some obscure library file provided by the latest RHEL on the dev pc and not on CentOS)
        b. What happens if the applications behave differently(not likely but Ive seen it happen)
        c. No offense, but what if you as key frontman(assuming here) are not able to solve a CentOS issue and you need help
        d. You are proven right in the end you need a stream of updates, so how much will it cost to setup one
4. Suppliers
        a. Do your organizations or partners have the capability and experience to implement rapid/ acceptable deployment for OS (provided you need multiple farms)
        b. What will they charge and feed it back to 1
5. Customers
        a. Do you marketing people go around promoting quality and talk about your RHEL, imagine the liability if it your customer faces an issue and get pissy
        b. Will they accept CentOS, redhat has a lot of pull in the enterprise linux world. Like it or not, people will not like it when you switch away(like you!)
        c. Will your customers choose another supplier if you switch, customers can be fickle, if they can switch on color of a GUI they can swith on an OS
6. HR needs (not really your call from the sound of your post , but still its in your domain and you are holding the bucket, so better to voice out)
      a. Do your anticipated maintenance staff have the proper staff and certifcation needs(some organizations require a certain % of staff to be certified)
      b. Do you need to hire more staff(project/contract/temps) to enable this project

This is a very short summary of what you can do(ill write more if you pay me =) ).All feeds back to 1. And ultimately its the CIO's call as some posters have made the point.
Ive seen organizations dragged down by such issues, where one engineering group goes off pushing their own distro and another group pushes their own. Lots of wasted resources and time. If your CIO makes the call, he makes the call. If you as SME know the difference, present in a way so that he can make the call. Supporting redhat will not help your organization or you. Put it in neutral terms and show what RH has to offer and if you got time pull in other companies. If he is open to CentOS why not suggest the full spectrum and let him make the decisions. pad it with costs from trade magazines(alright bad source but still better than nothing) , studies and most importantly your company's history. His call, his decision , his responsibility. In any case, if it hits the fan, you are covered and your organization has a plan from day 1. Good luck

Google searching for porn
Facebook hoping to make contact with porn star
Microsoft for fixing windows when they click on free porn ads

That can be mitigated by programming with bias for children, its just a matter of how long it takes and whether governments are willing to enact legislation for it. I dont have the statistics for this but I would think the proportion of accidents attributed to driver error and driver being a dick is significantly higher than other causes. If we can get rid of this with a programmable system why not. Besides having a whole city run by centralized programming reduces gridlock I would think because the system can optimize the whole driving population at a given time and automatically reoute areas experiencing congestion. On a nonsensical note, I think its cool if they park my car in a "elevator thingy"hahha

Data is always needed from manufacturing, operations, sales, marketing, administration, outsourcing etc. Realistically speaking 10% usage is very high, im tending towards 5% usage. But of course depends on how in depth the researcher went, there are always unofficial sources of data that are used in corporations. Anyway whats so bad, big waste means more need, more staff, more employment and higher wages. You always appoint a new rep to oversee data, and monitor changes when new information is required. It shows management incompetency but hey i get better pay, why is anyone complaining. I

Sorry, have to disagree, the problem is to do with management not idea generators and visionaries. Their job is to come up with ideas, management is to make the cash flow happen. Enterprise side licensing, training and certifications, better APIS, consultancy, tweaking hardware to work better on sun machines(controlled jvm on sun?) Controlling standards is no easy thing and SUN definitely did that. Problem was they couldn't tap the huge market potential. Perhaps thats what oracle is doing now, making it more profitable, sure some people will get pissed, but jobs are at stake. Cash flow comes first. A nice company wont last forever, its just not scalable. As for Gosling, he will rise again in whatever company that he decides to join but I wish that he start his own. Too many app builders and so few raw tech companies these days. Just my 2 cents.