An I-601 waiver, also known as the Application for Waiver of Grounds of Inadmissibility, allows certain individuals who are ineligible for a visa or other immigration benefits to apply for a waiver of specific grounds of inadmissibility. Eligibility depends on the specific ground being waived, your relationship with a U.S. citizen or permanent resident, and whether you can demonstrate that your denial of admission would cause extreme hardship to your qualifying relative. More details can be found on the USCIS I-601 page.