Operation Instructions (OIs) as well as Interpretations were created to supplement
and clarify the provisions of the statute and regulations. These
materials usually are not included in the regulations because
they deal generally with procedural matters and do not deal directly
with application and benefit requirements. They are still a useful
tool to help you understand how the DHS Bureaus performs their different immigration services and enforcement functions. Users of the Operation Instructions and Interpretations
should always consult the relevant regulations and manuals in
conjunction with these materials. As the Bureaus have grown, the trend
has been towards inclusion of more materials in the regulations
and field manuals, and the Operations Instructions and Interpretations have been updated less frequently.
Link to the Operation Instructions.