What section of the INA outlines the DO's statutory authority?

The Immigration and Nationality Act (INA) confers statutory authorities to various roles within the immigration system, and it's important to identify the correct section that outlines the authority of a District Office (DO) or similar administrative functions.

Section 235 of the INA is particularly relevant, as it lays out the powers and responsibilities associated with the inspection of individuals entering the United States. This section provides the foundation for how immigration officials, including District Offices, manage the processes related to the admission of immigrants and non-immigrants, determining eligibility for entry, and ensuring compliance with immigration laws.

In contrast, sections like 237 primarily address the deportation grounds for individuals already present in the U.S., section 290 relates to the reporting of information concerning nonimmigrant status, and section 215 involves the specifics around temporary non-immigrant admissions and changes of address. These do not focus specifically on the statutory authority of District Offices. Therefore, section 235 accurately encapsulates the essential statutory framework that defines the roles of immigration officials and their operational authority, which is why it is the correct choice.