CBD was already a schedule 1 substance being derived from cannabis as the DEA does not differentiate hemp from marijuana - it's all cannabis to them.
The DEA has previously issued guidance, that if products derived from cannabis have less than 3% THC, they have no interest in interfering with genuine business commerce.
The article linked below includes mention that CBD imported in the US has been held on occasion but eventually released every time.
All the DEA did here is give CBD its own schedule 1 'Code.' Read the article linked below.
CBD was already a schedule 1. Now it is a schedule 1 with its own 'Code.'
This may actually be helpful in clearly differentiating CBD from THC and not letting CBD inadvertently get held up under the THC 'code' - keeping in mind the DEA has already published guidance that it has no interest in interfering with cannabis by products that have less than 3% THC.