OIO/DIO has overall responsibility for the administration
of Social Security programs abroad, including liaison and coordination,
as well as Field Office (FO), Disability Determination Services
(DDS), and Program Service Center (PSC) functions. For development
of international cases pending at the hearing level, the Administrative
Law Judge (ALJ) must request assistance from OIO/DIO through the
Office of Hearings Operations (OHO) regional office,
except for claimants residing in Canada or Mexico. Instructions
for claimants living in Canada and Mexico can be found in subsection
D below.