Immigration lawyers say scrutiny around marriage-based Green Card applications in US has tightened in recent months, with applicants facing closer checks during interviews and increased enforcement action even at the interview stage. Marriage remains one of the most common routes to permanent residency, but attorneys warn that the process is now being examined more closely than before.According to immigration attorney Douglas Lightman of Lightman Law Firm LLC in New York, “Getting a green card through marriage is one of the most common pathways to lawful permanent residence in the United States. It also is one of the fastest routes to permanent residence, with some applicants receiving approval in as little as 9 to 15 months.”However, he and other lawyers note that it is also one of the riskiest routes, because applicants must clearly prove the marriage is genuine and not entered into for immigration benefits.A marriage-based Green Card allows the foreign spouse of a US citizen or lawful permanent resident to live and work anywhere in the country. The type of Green Card issued depends on how long the couple has been married at the time of approval.Attorney Lightman explains that there are two main categories. A 10-year Green Card is issued to spouses who have been married for more than two years when their application is approved. This is also known as an IR-1 visa. A 2-year conditional Green Card is issued when the marriage is less than two years old at approval. This is known as a CR-1 visa and requires the couple to later file Form I-751 to remove conditions.US citizens can often file Form I-130 and Form I-485 together for faster processing, but spouses of Green Card holders typically face longer waiting times due to visa caps and quotas.Eligibility rules remain strict. Immigration attorney Matthew Curtis explains, “The marriage must be legally valid with a government-issued marriage certificate. USCIS updated its policy recently to clarify that only marriages legally recognized and registered with civil authorities qualify. Both spouses must have been legally free to marry, with all previous marriages properly terminated through divorce, annulment, or death.”Beyond paperwork, applicants must also meet what is known as the bona fide marriage standard, which is often the most closely examined part of the case. Curtis says, “The USCIS examines whether you and your spouse share a life together through financial entanglement, cohabitation, and emotional connection. The burden of proof is entirely on you.”Couples are expected to present strong supporting evidence. Lightman says, “Joint financial accounts show financial interdependence. Housing documentation proves you live together. Photos spanning the length of your relationship document your time together. Affidavits from friends and family provide third-party verification. Travel records, communication records, and receipts from joint purchases all strengthen your case.”At the same time, attorneys warn that certain factors can raise red flags. Curtis says, “Things like a significant age difference, limited shared language, very short courtship followed by immediate marriage, living at separate addresses, minimal joint financial documentation, and previous marriages to US citizens all trigger enhanced scrutiny.”Financial requirements also remain central. Lightman explains that sponsors must prove they can support their spouse at 125% of the federal poverty guidelines, with a two-person household requiring income of about $25,550. If this is not met, applicants may rely on a joint sponsor, combined household income, or qualifying assets.