The Thrift Savings Plan (TSP), a tax-deferred investment vehicle for Federal Government employees and uniformed service personnel, is one of the greatest mechanisms through which to build wealth in the world. The TSP was established in the 1980s as part of an effort to modernize the Federal Government's benefits system. Before then, civil servants relied solely on the antiquated Civil Service Retirement System (CSRS), the major retirement program covering federal civilian workers since 1920. CSRS calculated benefits in a complex formula based on number of years worked, but workers in the CSRS...