Advice needed- Important mail stuck at distribution center

Hi all. I am really worried about my priority mail from the government being stuck at the Boston distribution center 🥹 It’s a super important legal document for me and I really need it to come soon in order to maintain my working status. Is there any way to have USPS looking into this quicker? Or if it’s stuck at a big distribution center with thousands of mails , maybe it’s better to consider it lost? Any advice would help 🙏