https://www.sss.fi/2024/02/ruotsalaismediat-lopullinen-sinetti-ruotsin-nato-jasenyydelle-ei-toteudu-talla-viikolla/

Washington was supposed to take a delegation of Swedes who would travel there with a Nato paper (which already has a Hungarian sign on it)

But USA abruptly cancelled it. They say it will happen "within 2 weeks".

Sweden is in Nato immediately once the paper has been vaulted in USA.