Hello, I am an F1 student (nonresident), and I have a U.S. citizen son.
Am I eligible to claim an "Additional Child Tax credit ($1000)"?

Thanks!

Non-Resident Aliens that may be able to claim exemptions for dependents (and the child tax credit):
O Residents of Canada or Mexico --if the qualifying person meets the age, relationship, joint return, residency and support tests for dependents.
O Residents of Japan or South Korea – qualifying person must be a child that meets the age, relationship, joint return and support tests AND lived with the taxpayer in the U.S. at some time during the tax year AND the taxpayer had effectively connected income from a U.S. source. Students and apprentices from India – qualifying person must be a child that was not admitted to the U.S. on F-2, J-2 or M-2 visas AND meets the age, relationship, joint return and support tests.