Public health policy should be guided by science, data and a large dose of common sense. The promised benefits of any policy should be weighed against the known risks and possibility of unintended consequences. Last February, the House of Representatives passed legislation that would ban the sale of flavored e-cigarettes to adults. The bill, sponsored by Rep. Frank Pallone Jr., D-N.J., did not advance in the Senate, but is sure to rear its draconian head in the next Congress.