The two categories of information are largely referred to as “content” and “metadata”. The terms are not actually well defined under law when it comes to internet GETS and POSTS.
It’s supposed that knowing you went to “amazon.com” would be metadata. Knowing you went to “PornHub.com/v/id=Xyz” (or whatever URL would link to a specific video) would be considered content.
Today they are allowed to collect just “metadata” without a warrant. This amendment would have explicitly required a warrant for metadata.
McConnell is proposing another amendment which would clarify the distinction that content can not be obtained without a warrant, but basically maintains the status quo, while also exempting specific types of people or entities.
IANAL, but reading the McConnell amendment almost makes me think there’s a secret court interpretation of the existing law where they decided they could collect “content” as well without a warrant.