What are the provisions of the US Immigration Nationality Act 2 14b?

As long as the visa officer suspects that you are inclined to emigrate, whether it is because of your materials, the content of your answers or your performance at that time, the visa officer will send you a receipt with this clause printed on it.

(b) Every foreigner 10/ (except for non-immigrants described in subsection (l) or (v) of 10 1(a)( 15), And non-immigrants except those described in subsection101(a) (15) (h) (i) (b 1) shall be presumed to be immigrants according to the International Organizations Immunity Act [22 U.S.C. 288 Or an alien who is an attendant, servant, employee or immediate family member of any such alien, is not entitled to apply for or obtain an immigrant visa, or to enter the United States as an immigrant, unless he signs a written waiver in the same form and evidence as provided for in section 247(b).