Unless the I-94 admission period is limited to less than 90 days, then an applicant for admission under ESTA can stay the full 90 days (assuming the activities

Unless the I-94 admission period is limited to less than 90 days, then an applicant for admission under ESTA can stay the full 90 days (assuming the activities stay within the B-1/B-2 lines) regardless of what the admitting CBP officer says or even writes down. In other words, if a CBP officer believes that an applicant for admission should be admitted for less than 90 days, then the officer must limit the I-94 admission period.