If L1B works out, what's the actual path to US citizenship?

L1B is dual intent — I can be on L1B status and simultaneously have a green card process underway without it counting against me. TN is the opposite: it requires intent to leave the US after status ends, so pursuing a green card while on TN would work against renewal. Practically, that means TN can get me working in the US, but it doesn't lead to citizenship on its own — I'd need to convert to something dual-intent (like L1B, if it's still available) before starting the green card process.

So this page assumes the L1B path: employer sponsors the transfer, and at some point after that we start the green card process without needing to change status first.

For L1B specifically (unlike L1A managers, who can sometimes qualify for EB-1C without labor certification), the standard route is employer-sponsored EB-2 or EB-3, which normally requires PERM labor certification — the employer testing the US labor market to show no qualified US worker is available for the role. PERM processing alone typically runs1–2 yearsrough, PERM, and that's before anything else starts.

After PERM, the employer files an I-140 immigrant petition. From there, the wait depends on the visa bulletin — how backlogged the EB-2/EB-3 categories are for Mexico specifically that month. This is the single biggest unknown in the whole timeline and can swing the total by years; it needs checking against the current bulletin when this actually starts, not assumed from general figures.

Once a visa number is current, the last step is adjustment of status (if already in the US) or consular processing (if outside) to actually receive the green card.

Once the green card is approved, naturalization requires 5 years as a permanent resident before applying (shorter if married to a US citizen, which doesn't apply here), with two conditions running the whole time: continuous residence (no single absence long enough to be read as abandoning US residence) and physical presence for at least half of that 5-year period.

At the end of that window: pass the English and civics test (required between ages 18–54), file Form N-400, complete an interview, and take the oath. Processing time for N-400 varies by field office and changes over time, so that figure needs checking closer to when it's actually relevant.

Stacking the pieces — PERM, the I-140/visa-bulletin wait, adjustment of status, the 5-year permanent residence clock, then N-400 processing — a realistic total from L1B start to citizenship is commonly quoted in the 8–12+ yearsvery rough range for employment-based cases, and the exact number is driven almost entirely by how backlogged Mexico's EB-2/EB-3 categories are when PERM actually gets filed. This isn't a number to plan around precisely — it's meant to set expectations that this is a long-horizon path, not a fast one.