Since the federal government began to supervise commodity futures trading, Congress has regarded preventing price manipulation as a main purpose of supervision. As long as there is federal supervision, there will be a huge family reporting system. A recent study by Mike Penick, an economist with the Commodity Futures Trading Commission (CFTC) in the United States, shows that the requirement for large households to declare was first implemented in 1923, when the Grain Futures Act was just passed, which established the federal government's supervision over commodity futures.

CFTC, established in 1975, is an independent regulatory body to supervise futures trading in the United States. The new institution has a wide range of supervision, including domestic and foreign agricultural products, metal futures markets and emerging futures markets such as finance and energy. Because the responsibility is so great, CFTC itself is relatively small, so it has always relied on the extended family reporting system as a balancer.

The major declaration system is another system closely related to the position limit system, which controls trading risks and prevents large households from manipulating the midfield. After the futures exchange established the position limit system. When the speculative position of a certain type of member or customer position contract reaches more than 80% (inclusive) of the speculative position limit stipulated by the exchange, it must be reported to the exchange. The application contents include customer account opening, transaction, source of funds, etc. Trading motives, etc. It is convenient for the exchange to examine whether there are excessive speculation and market manipulation behaviors and trading risks of large households.