<Li> Kevin McCarthy, 2009--2011 (Minority) </Li> <Li> Peter Roskam, 2011--2014 (Majority) </Li> <Li> Patrick McHenry, 2014--present (Majority) </Li> <Li> List of Democratic Chief Deputy Whips <Ul> <Li> (1977--1981) Dan Rostenkowski </Li> <Li> (1981--1987) Bill Alexander </Li> <Li> (1987--1991) David Bonior </Li> <Li> (1991--1993) Barbara Kennelly, Butler Derrick, & John Lewis </Li> <Li> (1993--1995) Barbara Kennelly, Butler Derrick, John Lewis, & Bill Richardson </Li> <Li> (1995--1997) Rosa DeLauro, John Lewis, & Bill Richardson </Li> <Li> (1997--1999) Rosa DeLauro, Chet Edwards, John Lewis, & Robert Menendez </Li> <Li> (1999--2002) Chet Edwards, John Lewis, Ed Pastor & Maxine Waters </Li> <Li> (2002--2003) John Lewis, Ed Pastor, Max Sandlin & Maxine Waters </Li> <Li> (2003--2005) John Lewis (Senior Chief Deputy Whip), Joe Crowley, Baron Hill, Ron Kind, Ed Pastor, Max Sandlin, Jan Schakowsky, & Maxine Waters </Li> <Li> (2005--2007) John Lewis (Senior Chief Deputy Whip), Joe Crowley, Diana DeGette, Ron Kind, Ed Pastor, Jan Schakowsky, John Tanner & Maxine Waters </Li> <Li> (2007--2011) John Lewis (Senior Chief Deputy Whip), G.K. Butterfield, Joe Crowley, Diana DeGette, Ed Pastor, Jan Schakowsky, John Tanner, Debbie Wasserman Schultz, & Maxine Waters </Li> <Li> (2011--2013) John Lewis (Senior Chief Deputy Whip), Maxine Waters, Ed Pastor, Jan Schakowsky, Joseph Crowley, Diana DeGette, G.K. Butterfield, Debbie Wasserman Schultz, Jim Matheson, & Peter Welch </Li> <Li> (2013--2015) John Lewis (Senior Chief Deputy Whip) Ben Ray Lujan, Terri Sewell, Jan Schakowsky, Keith Ellison, Diana DeGette, G.K. Butterfield, Debbie Wasserman Schultz, Jim Matheson, & Peter Welch </Li> <Li> (2015--present) John Lewis (Senior Chief Deputy Whip) Jan Schakowsky, Diana DeGette, G.K. Butterfield, Debbie Wasserman Schultz, Keith Ellison, Terri Sewell, Kyrsten Sinema, Joaquin Castro & Peter Welch </Li> </Ul> </Li>

What are the duties of the majority whip in congress