USCIS  issued a notice to reduce the time U.S. citizens are separated from their immediate family members when they have to exit the U.S. to process a waiver of indamissibility  to apply to obtain legal permanent residency.   Currently, immediate relatives of U.S. citizens who have accrued unlawful presence in the U.S. and need to apply for a waiver of inadmissibility must leave the country and wait outside of the U.S. for months and sometimes years during the waiver proccess.  The proposed plan would allow immediate family members to apply for a provisional waiver and determination while in the U.S.   Those eligible for this streamlined process will still need to meet all legal requirements for admission to the U.S. and make a showing of extreme hardship as a result of the separation.  For additional information, please see this link.