Upon a basis of reciprocity secured by agreement entered into by the President of the United States and the President of the Philippines, a national of the Philippines, and the spouse and children of any such national if accompanying or following to join him, may, if otherwise eligible for a visa and if otherwise admissible into the United States under the Immigration and Nationality Act [8 U.S.C. 1101 et seq.] (66 Stat. 163), be considered to be classifiable as a nonimmigrant under section 101(a)(15)(E) of said Act if entering solely for the purposes specified in subsection (i) or (ii) of said section.