evidence: At the Democratic National Convention in Chicago, Harris and fellow Democrats touted their records on curbing drug prices. Harris supporters point to her past and present. [...] "In the United States of America, no senior should have to choose between either filling their prescription or paying their rent," Harris said Aug. 15 in her first joint appearance with Biden since he exited the presidential race. [...] Harris also backed a contentious policy that, in some instances, would empower the federal government to inject more competition into the marketplace by seizing the patents on some high-cost drugs developed with federal funds.