This report analyzes rules changes made on only the opening day of the 110th, 111th, 112th, 113th, and 114th Congresses, with references in footnotes to other selected legislation and actions during these Congresses that also affected House rules. One of the majority party's prerogatives is writing House rules and using its numbers to effect the chamber's rules on the day a new House convenes. Because all Members of the House stand for election every two years, the Members-elect constitute a new House that must adopt rules at the convening of each Congress.