我现在是美国籍,姐姐的小孩今年夏天来美读大学,姐姐想圣诞节的时候来美看我和她小孩,我们不在同一个州。这种情况,是我还是姐姐小孩写邀请信更容易拿到签证?谢谢! -If you will pay the travel for your sister, you had better invite her, or your sister's child invites her and you pay the fee (provide I-134).