In Addition to that, Unless there is emergency involved, such review can take from 30 days to 90 days. At this time there are no details about the rule. One key question involves the scope of "certain qualified" OPT students that will be covered for the 17-month extension. Aside from this rule, there are currently bills in the Congress that also propose the extension of OPT somewhat in different context. Therefore, until the OMB review is completed and published in the federal register, the parameters of covered OPT are uncertain at this point but we should know about it soon!