A green card for the spouse of a US citizen or permanent resident, built on a bona-fide marriage

Only one thing: the kind of card USCIS issues at approval. If you have been married for 2 or more years on the day the I-485 (AOS) or consular interview is approved, USCIS issues an unconditional 10-year IR-1 card. If less than 2 years, you receive a 2-year conditional CR-1 card and must file I-751 inside the 90-day window before it expires to remove conditions. The classification has nothing to do with eligibility — only with whether a second filing (I-751) is required. The clock measures from the wedding date to the approval date, not the filing date.

Quality, decisively. A dated joint utility bill, joint tax return, or jointly-held insurance policy outweighs a hundred selfies — because joint financial commingling is what couples actually do and tourists cannot fake. The strongest packages show a continuous chain across multiple categories (housing, finances, insurance, travel) over the full duration of the marriage. The weakest are dominated by photos and short on financial records. Officers also weigh narrative coherence between your I-130 forms, your interview answers, and your affidavits — internal contradictions are far more damaging than missing categories.

If your USC spouse is the petitioner, yes — INA §245(c) exempts Immediate Relatives from most status-violation bars (unauthorized employment, overstays). You can adjust from AOS so long as you originally entered the US legally (i.e. were inspected and admitted or paroled). If you entered without inspection, you generally cannot adjust unless you qualify under §245(i) (grandfathered if a labor cert or I-130 was filed for you by 2001-04-30), TPS-related entry, parole, or another narrow exception — otherwise you must leave for consular processing, which often triggers the 3- or 10-year unlawful-presence bar requiring an I-601A waiver. LPR-spouse cases do NOT get the §245(c) exemption; out-of-status beneficiaries usually cannot adjust at all.

Three paths, in order of likelihood. (1) Joint sponsor — any USC or LPR adult, related or not, willing to sign an independent I-864 promising support; their income must independently meet 125% of poverty for their own household plus the immigrant. This is by far the most common fix and USCIS accepts it without prejudice. (2) Liquid assets — count assets convertible to cash within 12 months; the shortfall is multiplied by 3 for a USC-spouse contribution or by 5 for other relatives. (3) Beneficiary income — if the immigrant has been lawfully working in the US for the same employer who will continue employing them, that income can count. Attorney letters and "current job offer" letters generally cannot cure a shortfall.

Almost never. K-3 was created in 2000 to give USC spouses abroad a faster way to enter the US while the I-130 was pending. In practice, USCIS now adjudicates the I-130 and the K-3 I-129F on roughly the same timeline, and many K-3 petitions are administratively closed when the I-130 approves first. The Department of State also closes K-3 cases that arrive at NVC after the I-130 is approved. For nearly all couples, file straight CR-1/IR-1 (consular) or AOS — K-3 adds a step that no longer saves time.

Joint I-751 — file with your spouse in the 90-day window before the conditional card expires, attaching continued-marriage evidence (renewed joint accounts, new tax returns, photos, travel). USCIS auto-extends status by 24–48 months while it adjudicates. If you have divorced, are widowed, or have suffered abuse before the window opens, you may file I-751 alone with a waiver under one of three categories: (a) good-faith marriage now terminated by divorce, (b) deceased spouse, or (c) battery / extreme cruelty. The burden then shifts to proving the marriage was bona-fide at inception — bring everything you have. Late filing requires showing extraordinary circumstances; do not let the deadline pass.

A pending I-485 from marriage almost always denies on divorce, because the underlying I-130 spousal relationship no longer exists. Two exceptions: (1) VAWA self-petition — if you were the abused spouse, you may convert to a VAWA-based I-360 and preserve the I-485, (2) widow(er) provisions — if the petitioner dies after a USC-spouse I-130 was filed, the surviving spouse may continue on a Form I-360 self-petition if filed within 2 years of death and not remarried. If neither applies, the I-485 will deny; if you concealed the divorce to obtain approval, you face permanent immigration consequences far more serious than the denied case.

Yes — fully and uniformly since 2013 (post-Windsor) and reinforced after Obergefell (2015). USCIS treats opposite-sex and same-sex marriages identically for all immigration purposes if the marriage is legally valid in the place of celebration. You can marry in any US state or in any country recognising same-sex marriage; USCIS will accept it regardless of whether your home country recognises it. The standard of evidence, document list, interview process, and timeline are identical. The only practical wrinkle is that some non-US documents (birth certificates, civil status records) from countries that do not recognise same-sex marriage may require workarounds, which a competent attorney can handle.