Health insurers and drug makers have showered members of the 111th Congress with millions in campaign contributions over the last four years, with a special focus on leaders who will play major roles in shaping healthcare legislation, according to a study. Health insurers and their employees contributed $2.2 million to the top 10 recipients in the House and Senate since 2005, while drug makers and their employees gave more than $3.3 million to top lawmakers during that period, according to an analysis of federal elections data by California-based advocacy group Consumer Watchdog.