Focus USA told California it received 965,924 deletion requests in 2024, complied with all of them, denied none, and recorded a one-day mean and median. On its own numbers, deletion requests were honoured quickly. Its page also reserves the right to refuse a request it can't verify or that isn't available under your jurisdiction's law, so read the filing as a good sign rather than a guarantee. If a request is denied, the Consumer Rights Privacy Notice says to appeal by email to privacy@focus-usa.com.
There's nothing to check directly, since nothing about you was ever published to look up. The observable signal is slower and blunter, which is less unsolicited mail at that address over the following months.
Be realistic about scope. Focus USA is one supplier among many feeding the same campaigns, so removal here reduces the flow rather than ending it. If the mail continues, the likeliest explanation is a different list company, but a name, address or email that didn't match their record, or a campaign list sold before you filed, would look exactly the same from where you're standing. If it doesn't thin out, re-file with the details exactly as they appear on the mail.
And if a move brought you here, the next move regenerates the record. New mover data is compiled fresh each time, so a suppression today says nothing about a relocation next year. Re-file when you move.