If all the following are true, then the answer seems to be yes.
1. The children are US citizens with social security numbers.
2. They lived more than half the year with you (or with your spouse if you are filing jointly)
3. You and your spouse are both US citizens.
4. You are claiming them as dependents on your (joint) tax return.
As long as the children are citizens, lived with a parent and can be claimed as dependents, there does not seem to be a US residency requirement.