Can I buy USDC with USD?

Could you please clarify whether it's possible to purchase USDC directly with United States Dollars (USD)? I'm curious about the exchange process and if there are any specific platforms or exchanges that facilitate this transaction. Additionally, I'd like to know if there are any fees or commissions involved in converting USD to USDC and if there are any limitations or restrictions I should be aware of. Understanding the mechanics of this conversion is crucial for my investment decision. Thank you for your assistance.