Yep. Their Code of Ethics says:
1.5 Honor property rights including copyrights and patent.
Violation of copyrights, patents, trade secrets and the terms of license agreements is prohibited by law in most circumstances. Even when software is not so protected, such violations are contrary to professional behavior. Copies of software should be made only with proper authorization. Unauthorized duplication of materials must not be condoned.
I don't pirate software. I pay for the stuff I use when required. However, I damn sure don't respect software patents or nebulous "terms of license agreement" EULA bullshit. I'll honor them as mandated by law to keep me and my employer out of trouble (although every programmer reading this has probably violated 3 stupid patents today in the course of their job). And while the RIAA doesn't "authorize" me to rip CDs I've bought, I'm legally entitled to do so and will at my convenience.
I think my views are pretty mainstream among programmers. If the ACM wants me to join, they need to remove the requirements for me to worship pro-corporate, anti-citizen, rent-seeking behavior. I can't ethically consent to support their unethical Code of Ethics.