Laich was originally drafted by the Senators in the 2001 NHL Entry Draft, and was later traded to the Capitals as part of the package for Peter Bondra. Before playing professionally, Laich spent time in the Western Hockey League (WHL) playing with the Moose Jaw Warriors and Seattle Thunderbirds. He has represented Canada internationally, capturing a silver medal at the 2003 World Junior Championships, and playing for Canada again at the 2010 World Hockey Championships.