This article discusses the growing population and expense of housing elderly inmates. Currently, the U.S. Bureau of Prisons houses over 10,000 inmates aged 60 or older. Recent audits by the Inspector General indicate that the BOP has woefully inadequate resources to deal with the elderly inmate population.
http://reason.com/archives/2017/10/22/when-prisons-become-nursing-ho
Mark Allenbaugh
Mark Allenbaugh serves as President and Chief Research Officer of SentencingStats.com, Inc.. He is a former staff attorney for the U.S. Sentencing Commission, and a co-editor of "Sentencing, Sanctions, and Corrections: Federal and State Law, Policy, and Practice" (2nd ed., Foundation Press, 2002). Mark is widely regarded as a national expert in Federal sentencing guidelines, analysis and strategy.