Where are proceedings for determining the inadmissibility or deportability of a noncitizen identified?

The correct answer identifies the specific sections of the Immigration and Nationality Act (INA) and the Code of Federal Regulations (CFR) that outline the proceedings for determining the inadmissibility or deportability of a noncitizen. Section 239 of the INA details the procedures for initiating removal proceedings, while section 240 governs the hearings related to these proceedings. In conjunction with these INA sections, Part 1240 of the CFR elaborates on various aspects of removal proceedings, including the rights of individuals involved, the conduct of hearings, and the responsibilities of the immigration judges.

This combination is crucial as it provides a framework for understanding how inadmissibility and deportability cases are handled administratively through immigration courts, including the roles and procedures that must be adhered to during hearings. Understanding these legal references is essential for interpreting the processes involved in U.S. immigration law effectively.

The other choices do not accurately reflect both the statutory and regulatory framework that governs proceedings for inadmissibility or deportability. For instance, while the first option refers to definitions and general principles, it does not address the specific proceedings. The other references may pertain to specific rules or sections but do not capture the full process as clearly as the correct response does.