USCIS 电话工作时间 8003755283？ 谢谢

USCIS National Customer Service Center Saturday Hours
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The USCIS National Customer Service Center (NCSC) is expanding its hours to include Saturdays from 9 a.m. to 5 p.m. Live agents will now be available at Monday – Friday, 8 a.m. – 8 p.m. and Saturdays from 9 a.m. to 5 p.m. in each time zone. Call the NCSC toll-free at 1-800-375-5283.

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