There are authorized to be appropriated to the Department of State for the use of the United States section of said Commission not to exceed $44,900,000 to carry out the provisions of said convention and sections 277d–17 to 277d–25 of this title and for transfer to other Federal agencies to accomplish by them or other proper agency relocation of their facilities necessitated by the project. Of the appropriations authorized by this section, not to exceed $4,200,000 may be used to carry out the provisions of section 277d–19 of this title. The provisions of section 277d–3 of this title are hereby expressly extended to apply to the carrying out of the provisions of said convention and sections 277d–17 to 277d–25 of this title.