SERVICES DE « PORTAGE SALARIAL » DIT DE « TIERS EMPLOYEURS » D’EXPERTS TECHNIQUES INTERNATIONAUX (ETI) AUX ETATS UNIS POUR LE POLE RELATIONS EXPERTS (REX) DU DEPARTEMENT COOPERATION BILATERALE ET MOBILISATION DE L’EXPERTISE (CBME) D’EXPERTISE FRANCE. / PROVISION OF WAGE PORTAGE SERVICES (SO-CALLED ‘THIRD-PARTY EMPLOYER SERVICES') FOR INTERNATIONAL TECHNICAL EXPERTS (ETIS) IN THE UNITED STATES, FOR THE EXPERTS RELATIONS UNIT (REX) OF THE BILATERAL COOPERATION AND EXPERTISE MOBILIZATION DEPARTMENT (CBME) OF EXPERTISE FRANCE.