Why is it not recorded in the passport after studying in the United States?

If the discrepancy record is not found, it may be a system delay. Just wait 1-2 days. Entry-exit records can be inquired through WeChat applet "Immigration Bureau", Alipay applet "Immigration Bureau", any domestic entry-exit administration department or port frontier inspection organ; Enter "Immigration Bureau" in the WeChat search box-click to enter the "Immigration Bureau" applet-enter "My" in the bottom menu bar-click "Entry and Exit Records"-complete the real-name authentication-select the viewing time period-view the entry and exit records.