Why not a law saying they cannot sell in America for more than they charge in any developed country where they charge least?

Americans ready to crack down on drug prices that force some to skip doses

Large majorities of Americans from both major parties support steps to control prescription drug costs such as showing prices in ads, removing barriers to generics and letting patients get less expensive drugs from Canada, a new poll shows.

By a 9-to-1 ratio, Republicans, Democrats and independents favor making drug companies show list prices in their advertising, says a new survey from the Kaiser Family Foundation. 

Highly advertised medicines such as Humira, for arthritis, cost tens of thousands of dollars a year, even after discounts.

Although Republicans tend to frown on government control over commerce, 8 in 10 Republican respondents said they support giving negotiating power to the $700 billion Medicare program in order to lower drug prices for seniors.

More than 70 percent of all respondents back importing drugs from Canada and capping out-of-pocket Medicare costs. 

More than 80 percent said they favor making it easier for less expensive generics to compete with brand-name drugs.