Is it possible to obtain a Ham license in the US if I am not a US Citizen (F-1 Student visa / B1/B2/BCC tourist visa)?
I'll register later on.
The FRN form actually asks for a reason for not having an SSN (if applicable) and one of them is being a foreigner
Amateur Radio license/upgrade applicants should be advised to use their FRN
ARRL/VEC urges all Amateur Radio license and upgrade applicants to use their FCC Registration Number (FRN), if they have been assigned one, when completing Form 605, not their Social Security number. The FCC asks applicants to register via the FCC's COmmission REgistration System (CORES) https://fjallfoss.fcc.gov/coresWeb/publicHome.do, to obtain an FRN, and it requires applicants to use their FRNs when filing Form 605. The FRN uniquely identifies an applicant in all transactions with the FCC and avoids the need to continually provide a Social Security number on the application form. ARRL/VEC staff reports that when license data is submitted to the FCC using a Social Security number when the applicant already has an FRN, the FCC rejects the data file because an FRN already exists.