Actually, it does, in so many words - which is why the law causes so many problems. The DMCA says you cannot remove or circumvent copy protection.
By banning all acts of circumvention, and all technologies and tools that can be used for circumvention, section 1201 grants to copyright owners the power to unilaterally eliminate the public’s fair use rights. Already, the music industry has begun deploying "copy-protected CDs" that promise to curtail consumers’ ability to make legitimate, personal copies of music they have purchased.Section 1201 Jeopardizes Fair Use.
Here's another good site.
The studios used this to go after DVDXCopy, which would remove the protection, make a copy, and then put the protection on the copy. Unfortunately, the fact that it broke the encryption in the first place was enough gave the studios enough legal standing to take the company down.
Obviously, this doesn't apply to laserdiscs, because they are incompatible with macrovision, but I was surprised to see Best Buy carry macrovision-breaker boxes, which would obviously be used to make VHS-to-VHS or DVD-to-VHS copies.