It’s always important to renew your VisaScreen before it expires; however, this is especially important with the Priority Date cut-offs starting to move as quickly as they have lately.
In addition to needing a valid VisaScreen every time you enter the U.S. on a temporary work visa, you also need a valid VisaScreen on the day you file your Application to Adjust Status AND on the date the application is finally processed.
VisaScreens can take three or more months to renew, even longer if you also have to take the English test.
You don’t want to have your Priority Date become current, only to discover you can’t file for several months because your VisaScreen needs to be renewed.
Even worse, you don’t want to get a Request for Evidence (RFE) if your Application to Adjust Status case is pending, and then have your case denied because you could not get your VisaScreen renewed in time to respond to the RFE.
Until you have your green card in hand, always renew your VisaScreen before it expires, no matter what your profession.
You can find more information about renewing your VisaScreen at these sites:
CGFNS (Registered Nurses, Physical Therapists)
FCCPT (Physical Therapists)
NBCOT (Occupational Therapists)