Answer:
Congress.
Explanation:
Trade can be defined as a process which typically involves the buying and selling of goods and services between a producer and the customers (consumers) at a specific period of time.
The Congress of the United States of America refers to a bicameral legislature of the federal government, established under the Constitution of 17 89. A bicameral legislature can be defined as a legislative body that comprises of two chambers or houses; upper house and lower house. The upper chamber or house consists of senators while the lower chamber consists of house of representatives.
Generally, the type of government in which legislators such as senators or house of representative members are found is known as a democracy and they are saddled with the responsibility of enacting or making laws.
According to Article 1, Section 8 of the Commercial Clause, the Congress of the United States of America shall have power or authority to regulate trade between states and foreign countries (nations).
In this scenario, your neighbor is arrested for transferring illegal products through state lines. Thus, the body which has the power to regulate trade between states is the Congress.
