The issue that he raises falls within the competence of the US authorities, as they are criteria of permanence in this country, and only they can confirm in this regard. In the general case, if you arrived in the US with a Spanish passport and under the ESTA visa exemption program, it is possible to remain as a legal limit for up to 90 days. For longer stays, it is usual to obtain a visa with the corresponding US Embassy, before traveling to this country. The Consulate of Spain does not have jurisdiction or further information regarding legal stay in the US. To do this, you must contact the United States authorities at the nearest Immigration Office or through the toll-free number of Emigration 1-800-375-52-83 / bit.ly/2DVoTtj In case of staying in this demarcation, you must register in the Consular Registration Registry: bit.ly/2qvPZyk
If you stay longer than due it is clear that you will stay illegal ...
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