I don't think it's a question of "official" vs. "personal" accounts. It's like if you use a personal email at work, you're still subject to regulatory informati

I don't think it's a question of "official" vs. "personal" accounts. It's like if you use a personal email at work, you're still subject to regulatory information withholding guidelines. Using a personal account to conduct official business doesn't magically absolve you of your responsibilities under the law. If you use your personal Twitter account to talk with friends and personal interests, then go ahead and block whomever. But if you use your personal account for official business, e.g. to discuss your administration's policies and priorities, then you're acting in an official capacity and should not be allowed to block citizens.