A discretionary remedy for persons who are not permanent residents and who have been physically present in the United States for a continuous period of not less than 10 years immediately preceding the date of their application or the date of a notice to appear, if the person has been of good moral character during such period, has not been convicted of certain offenses, and establishes that removal would result in exceptional and extremely unusual hardship to their U.S. citizen or permanent resident spouse, parent, or child.