The issue focused on medical marijuana research and scientific studies that researchers say should be permitted under federal law. The hearing included testimony from scientists who study medical marijuana, researchers who research cancer treatments and academics who study pharmaceutical drugs.

Sen. Lisa Murkowski Lisa Ann MurkowskiRepublicans push forward despite new Kavanaugh allegations Budowsky: Murkowski's big Kavanaugh truth Kavanaugh accuser: 'My greatest fears have been realized' MORE (R-Alaska), the panel's ranking Republican, accused scientists of bias against marijuana research because they