From 0.3 to 81.1: What percentage of each state is owned by the federal government?
http://www.heritage.org/constitution/#!/articles/4/essays/126/property-clause
https://startpage.com/do/search?query=fed+goverment+can%27t+own+property&cat=web&pl=chrome&language=english
http://www.washingtontimes.com/news/2015/jun/22/supreme-court-rules-raisin-case-govt-cant-take-pro/?page=all
https://startpage.com/do/search?query=fed+goverment+can%27t+own+property&cat=web&pl=chrome&language=english
http://www.washingtontimes.com/news/2015/jun/22/supreme-court-rules-raisin-case-govt-cant-take-pro/?page=all