Child tax Credit 2018

Hi All,

 

I have a question regarding the child tax credits for 2018. I have two children (One born Outside US with TIN Number stayed with me for full year 2018) and US Born child with SSN. In the "Child Tax Credit and Credit for other Dependent WorkSheet", Can I put 2 for 'Number of Qualifying children under 17 with required SSN? The consultant who prepared tax for me said I can claim CTC for my US born child only and I can claim Other dependent for my child with TIN Number? Is that true? If it is not true, Can I file an amendment  claim to fix this, once I filed already?

 

Thanks for your Help!