谁核发这些旅游证件的?

Who issued the travel documents?

乘客办理城市预先登记服务，须出示订房确认单及核对所需旅游证件。

Passengers are required to bring their booking confirmation slips together with the passports of all persons checking in.

难道她不可以像欧盟国家之间的公民那样凭90天的旅游证件进入美国吗？

Couldn't she just enter on the 90-day tourist document, like any other citizen of the European Union?