If you receive a Request for Evidence ("RFE") for your I-129 TN or H-1B visa petition, pay close attention to the date USCIS expects a reply. USCIS is no longer providing a uniform time frame for replying to RFEs. In some instances, e.g., where only an additional document is required, USCIS will provide a shorter time period than normal for you to respond. Extensions of the response time will not be permitted.