do i have to file I 864 affidavit of support with i 130 ?

alitalia

New Member
i want to file i- 130 for my step daughter whose under 18 and lives outside the US . my question is do i have to file form i -864 with the I - 130 ?
also , is she required to file adjustment of status i -485 after her arrival to the US ?
Many thanks
 
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