Just one of many articles on the topic:

https://www.washingtonpost.com/business/as-brokers-urge-ira-rollovers-ex-workers-ditch-their-low-fee-federal-retirement-plan/2014/08/14/53c68dd0-2239-11e4-958c-268a320a60ce_story.html?utm_term=.2a863c57a100