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Catch the mistakes USCIS won't warn you about.

More than 1 in 10 filings are denied - and a denial can cost you the fee and put you in front of an immigration judge. Nex reviews your forms field by field and flags the issues before you file. Try a real check right here.

Flag CheckΒ· live demo, no account

N-400 Β· Part 9. Since becoming a permanent resident, have you taken a trip outside the U.S. that lasted 6 months or longer?

Pick an answer to see what Nex catches.

Form-preparation help - not a law firm, not legal advice. You stay in control.

Why a second check matters

A single avoidable mistake has never cost more. These are the stakes - drawn from public USCIS and federal policy data, not from us.

11%+
of filings are denied

and the rate has been climbing across recent years

The full fee
is forfeited on a denial

a rejected or denied filing does not refund what you paid USCIS

Since Feb 2025
a denial can trigger a Notice to Appear

the first step toward removal, if you lack status when denied

Sources: American Immigration Council USCIS denial-rate data (11.1% overall, Q4 FY2025); USCIS Notice to Appear policy memo (PM-602-0187, Feb 28, 2025). USCIS filing fees are non-refundable even when a filing is denied. Figures describe USCIS outcomes generally, not any Nex result.

How Flag Check works on your real form

01

Enter your answers, one field at a time

Every question comes with a plain-English explanation of what USCIS is really asking and what a good answer looks like.

02

Nex checks every field and cross-checks them

Cross-field validation catches missing answers, internal contradictions, and known denial and RFE risk patterns before you file.

03

Get a checklist of what to fix and attach

Each flag comes with what it means, how to address it, and the evidence to include - so nothing goes to USCIS unaddressed.

What we catch - and what we don't

Being clear about our limits is the honest thing to do - and it is how you know what you are actually getting.

Nex catches

  • Required fields left blank
  • Answers that contradict each other across sections
  • Known denial and RFE risk patterns (like continuous-residence gaps)
  • DS-160 red flags, from an uploaded confirmation PDF

Nex does not

  • Predict whether USCIS will approve you - no one honestly can
  • Give legal advice or apply the law to your situation
  • Act as your lawyer or file anything on your behalf

Your SSN and A-Number, handled like the sensitive data they are

The moment you enter them, your most sensitive details are encrypted at rest with AES-256-GCM - the same encryption strength trusted to protect sensitive government data. We are not a notario and not a middleman: it stays your information, and nothing is ever filed without you.

Read it in your language

USCIS itself says language access improves the accuracy of applications. Nex speaks your language.

EnglishEspanolδΈ­ζ–‡Tagalog

English is free forever. Spanish, Chinese, and Tagalog are included on Pro.

Plain English, not legalese

USCIS forms are written well above a 12th-grade reading level. We explain every field the way a patient friend would.

USCIS says

"Have you EVER been absent from the United States for a continuous period of six months or more during the periods for which you are required to establish continuous residence?"

We say

Since you got your green card, did you ever leave the U.S. for 6 months or more in one trip? Long trips can affect citizenship - so this one matters. We will help you explain it.

Honest, simple pricing

Start free. USCIS government filing fees are always separate.

Free
$0

5 consultations/mo, 1 form/mo, English

Pro
$29/mo

Unlimited forms, voice, 4 languages

Family
$49/mo

Up to 4 members, bundle filing

See what is in each plan β†’

Catch the issues before you file.

Run a real Flag Check on your own form, free. No credit card, no commitment - just a clearer, calmer filing.

Start my free check

NexImmigration provides form-preparation help. We are not a law firm, we do not provide legal advice, and using Nex does not create an attorney-client relationship. For a complex case - criminal history, prior denials, or removal proceedings - consult a licensed immigration attorney.