They're both equal. The checks and balances system was created to keep all the branches of government in check.
House leaders have more organizational control over the actions of representatives than Senate leaders do.
Party unity voting occurs when representatives vote with their party.
Unity Party of Nigeria was created in 1978.
Latvian Unity Party was created in 1992.
Unity Party - Hungary - was created in 1921.
Justice Unity Party was created in 1991.
Christian Unity Party was created in 1998.
Conceptual Party Unity ended in 2007.
Conceptual Party Unity was created in 2000.
Unity Party - Liberia - was created in 1984.
Unity Party of America was created in 2004.
Indonesian Unity Party was created in 2002.