https://www.irs.gov/credits-deductions/individuals/earned-income-tax-credit/who-qualifies-for-the-ea...

U.S. Citizen or Resident Alien

To claim the EITC, you and your spouse (if filing jointly) must be U.S. citizens or resident aliens.

If you or your spouse were a nonresident alien for any part of the tax year, you can only claim the EITC if your filing status is married filing jointly and you or your spouse is a:

• U.S. Citizen with a valid Social Security number or
• Resident alien who was in the U.S. at least 6 months of the year you're filing for and has a valid Social Security number