Playbook:

1. Liberal dumbfuck donates $5 to ACTblue
2. ACTblue register the name and address of dumbfuck
3. ACTblue operative uses own credit card to make donations in dumbfuck’s name
4. The operative gets reimbursed by ACTblue
5. ACTblue gets reimbursed by Soros

They’ll probably just skip steps 4 and 5 though, by using Soros’ credit card to pay for the donation.

The important part here is not who’s credit card’s being used, it’s the name and address on the donation reported to the FEC, and the origin of the money used to pay the credit card bill.