In which chamber of the congress does leadership system have more control over its members, and why?

House of representatives which has the most control over the 435 members have greater influence of leadership on its members.

Explanation:

House of representatives is the lowest house of the congress and it comprises of 435 members who represent the states in America respectively. 435 members make a unanimous decision and their influence on significant decision making is essential when compared to the upper house which is Senate. It comprises of hundred members. But both the houses and its members make a joint decision in order to pass and execute a bill into a law or a statute in US.

Senate leadership has highest positions but it has only very little powers. Majority leader is the most influential person who enjoys the power to begin the debate and deliberations regarding a bill.