U.S. Government owns the patent on cannabis:
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=6630507.PN.&OS=PN%2F6630507&RS=PN%2F6630507

Cannabis kills Tumor cells:
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1576089
http://www.ncbi.nlm.nih.gov/pubmed/20090845
http://www.ncbi.nlm.nih.gov/pubmed/616322
http://www.ncbi.nlm.nih.gov/pubmed/14640910
http://www.ncbi.nlm.nih.gov/pubmed/19480992
http://www.ncbi.nlm.nih.gov/pubmed/15275820
http://www.ncbi.nlm.nih.gov/pubmed/15638794
http://www.ncbi.nlm.nih.gov/pubmed/16818650
http://www.ncbi.nlm.nih.gov/pubmed/17952650
http://www.ncbi.nlm.nih.gov/pubmed/20307616
http://www.ncbi.nlm.nih.gov/pubmed/16616335
http://www.ncbi.nlm.nih.gov/pubmed/16624285
http://www.ncbi.nlm.nih.gov/pubmed/10700234
http://www.ncbi.nlm.nih.gov/pubmed/17675107
http://www.ncbi.nlm.nih.gov/pubmed/14617682
http://www.ncbi.nlm.nih.gov/pubmed/17342320
http://www.ncbi.nlm.nih.gov/pubmed/16893424
http://www.ncbi.nlm.nih.gov/pubmed/15026328

Cannabis Cures Colorectal Cancer:
http://www.ncbi.nlm.nih.gov/pubmed/22231745
http://www.ncbi.nlm.nih.gov/pubmed/17583570

Cannabis Cures Uterine, Testicular, and Pancreatic Cancers:
http://www.cancer.gov/cancertopics/pdq/cam/cannabis/healthprofessional/page4
Cannabis-derived substances in cancer therapy and anti-tumour properties:
http://www.ncbi.nlm.nih.gov/pubmed/20925645

Cannabis Cures Brain Cancer:
http://www.ncbi.nlm.nih.gov/pubmed/11479216

Cannabis Cures Mouth and Throat Cancer:
http://www.ncbi.nlm.nih.gov/pubmed/20516734

Cannabis Cures Breast Cancer:
http://www.ncbi.nlm.nih.gov/pubmed/20859676
http://www.ncbi.nlm.nih.gov/pubmed/18025276
http://www.ncbi.nlm.nih.gov/pubmed/21915267
http://www.ncbi.nlm.nih.gov/pubmed/22776349
http://www.ncbi.nlm.nih.gov/pubmed/18454173
http://www.ncbi.nlm.nih.gov/pubmed/16728591
http://www.ncbi.nlm.nih.gov/pubmed/9653194

Cannabis Cures Lung Cancer:
http://www.ncbi.nlm.nih.gov/pubmed/22198381?dopt=Abstract
http://www.ncbi.nlm.nih.gov/pubmed/21097714?dopt=Abstract

Cannabis Cures Prostate Cancer:
http://www.ncbi.nlm.nih.gov/pubmed/12746841?dopt=Abstract
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3339795/?tool=pubmed
http://www.ncbi.nlm.nih.gov/pubmed/22594963
http://www.ncbi.nlm.nih.gov/pubmed/15753356
http://www.ncbi.nlm.nih.gov/pubmed/10570948
http://www.ncbi.nlm.nih.gov/pubmed/19690545

Cannabis Cures Blood Cancer:
http://www.ncbi.nlm.nih.gov/pubmed/12091357
http://www.ncbi.nlm.nih.gov/pubmed/16908594

Cannabis Cures Skin Cancer:
http://www.ncbi.nlm.nih.gov/pubmed/12511587
http://www.ncbi.nlm.nih.gov/pubmed/19608284

Cannabis Cures Liver Cancer:
http://www.ncbi.nlm.nih.gov/pubmed/21475304

Cannabis Cures Cancer in General:
http://www.ncbi.nlm.nih.gov/pubmed/12514108
http://www.ncbi.nlm.nih.gov/pubmed/15313899
http://www.ncbi.nlm.nih.gov/pubmed/20053780
http://www.ncbi.nlm.nih.gov/pubmed/18199524
http://www.ncbi.nlm.nih.gov/pubmed/19589225
http://www.ncbi.nlm.nih.gov/pubmed/12182964
http://www.ncbi.nlm.nih.gov/pubmed/19442435
http://www.ncbi.nlm.nih.gov/pubmed/12723496
http://www.ncbi.nlm.nih.gov/pubmed/16250836
http://www.ncbi.nlm.nih.gov/pubmed/17237277

Cannabinoids in intestinal inflammation and cancer: www.ncbi.nlm.nih.gov/pubmed/19442536?itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSum&ordinalpos=22

Cannabis use and cancer of the head and neck: Case-control study: www.ncbi.nlm.nih.gov/pmc/articles/PMC2277494

Cannabis THC at high doses in area, inhibits cholangiocarcinoma cancer: www.ncbi.nlm.nih.gov/pubmed/19916793?itool=Email.EmailReport.Pubmed_ReportSelector.Pubmed_RVDocSum&ordinalpos=6
Targeting CB2 cannabinoid receptors as a novel therapy to treat malignant lymphoblastic disease
http://www.ncbi.nlm.nih.gov/pubmed/21115947

Marijuana kills cancer cells:
http://www.ncbi.nlm.nih.gov/pubmed/17952650
http://www.ncbi.nlm.nih.gov/pubmed/16835997
http://cancer.gov/cancertopics/pdq/cam/cannabis/healthprofessional/page4
Cannabis Treatment in Leukemia:
http://www.ncbi.nlm.nih.gov/pubmed/15978942
http://www.ncbi.nlm.nih.gov/pubmed/16754784
http://www.ncbi.nlm.nih.gov/pubmed/15454482
http://www.ncbi.nlm.nih.gov/pubmed/16139274
http://www.ncbi.nlm.nih.gov/pubmed/14692532

Cannabinoids and the immune system:
http://www.ncbi.nlm.nih.gov/pubmed/11854771
http://www.ncbi.nlm.nih.gov/pubmed/12052046

Cannabis partially/fully induced cell death in Cancer:
http://www.ncbi.nlm.nih.gov/pubmed/12130702
http://www.ncbi.nlm.nih.gov/pubmed/19457575
http://www.ncbi.nlm.nih.gov/pubmed/18615640
http://www.ncbi.nlm.nih.gov/pubmed/17931597
http://www.ncbi.nlm.nih.gov/pubmed/18438336
http://www.ncbi.nlm.nih.gov/pubmed/19916793
http://www.ncbi.nlm.nih.gov/pubmed/18387516
http://www.ncbi.nlm.nih.gov/pubmed/15453094
http://www.ncbi.nlm.nih.gov/pubmed/19229996
http://www.ncbi.nlm.nih.gov/pubmed/9771884
http://www.ncbi.nlm.nih.gov/pubmed/18339876
http://www.ncbi.nlm.nih.gov/pubmed/12133838
http://www.ncbi.nlm.nih.gov/pubmed/16596790
http://www.ncbi.nlm.nih.gov/pubmed/11269508
http://www.ncbi.nlm.nih.gov/pubmed/15958274
http://www.ncbi.nlm.nih.gov/pubmed/19425170
http://www.ncbi.nlm.nih.gov/pubmed/17202146
http://www.ncbi.nlm.nih.gov/pubmed/11903061
http://www.ncbi.nlm.nih.gov/pubmed/15451022
http://www.ncbi.nlm.nih.gov/pubmed/20336665
http://www.ncbi.nlm.nih.gov/pubmed/19394652
http://www.ncbi.nlm.nih.gov/pubmed/11106791
http://www.ncbi.nlm.nih.gov/pubmed/19189659
http://www.ncbi.nlm.nih.gov/pubmed/16500647
http://www.ncbi.nlm.nih.gov/pubmed/19539619
http://www.ncbi.nlm.nih.gov/pubmed/19059457
http://www.ncbi.nlm.nih.gov/pubmed/16909207
http://www.ncbi.nlm.nih.gov/pubmed/18088200
http://www.ncbi.nlm.nih.gov/pubmed/10913156
http://www.ncbi.nlm.nih.gov/pubmed/18354058
http://www.ncbi.nlm.nih.gov/pubmed/19189054
http://www.ncbi.nlm.nih.gov/pubmed/17934890
http://www.ncbi.nlm.nih.gov/pubmed/16571653
http://www.ncbi.nlm.nih.gov/pubmed/19889794
http://www.ncbi.nlm.nih.gov/pubmed/15361550

Cannabis treatment of translocation-positive rhabdomyosarcoma:
http://www.ncbi.nlm.nih.gov/pubmed/19509271

Cannabis Induces apoptosis of uterine cervix cancer cells:
http://www.ncbi.nlm.nih.gov/pubmed/15047233

Cannabis treatment in lymphoma:
http://www.ncbi.nlm.nih.gov/pubmed/18546271
http://www.ncbi.nlm.nih.gov/pubmed/16936228
http://www.ncbi.nlm.nih.gov/pubmed/16337199
http://www.ncbi.nlm.nih.gov/pubmed/19609004

Cannabis kills cancer cells:
http://www.ncbi.nlm.nih.gov/pubmed/16818634
http://www.ncbi.nlm.nih.gov/pubmed/12648025
Cannabis regulator of Neural Cell Development
http://www.ncbi.nlm.nih.gov/pubmed/16787257

Cannabis treatment of Melanoma:
http://www.ncbi.nlm.nih.gov/pubmed/17065222

Cannabis treatment for Thyroid Carcinoma
http://www.ncbi.nlm.nih.gov/pubmed/18197164

Cannabis treatment in Colon Cancer:
http://www.ncbi.nlm.nih.gov/pubmed/18938775
http://www.ncbi.nlm.nih.gov/pubmed/19047095
Cannabinoids in intestinal inflammation and cancer.
http://www.ncbi.nlm.nih.gov/pubmed/19442536

Cannabinoids in health and disease:
http://www.ncbi.nlm.nih.gov/pubmed/18286801
Cannabis a neuroprotective after brain injury
http://www.ncbi.nlm.nih.gov/pubmed/11586361

Cannabis inhibits Cancer Cell Invasion:
http://www.ncbi.nlm.nih.gov/pubmed/19914218

My friend went to hear that asshole speak in Eugene OR at a campaign stop 1980. That is what was on his protest sign. It made the front page of the local paper.