The recent violence is prompting one House Democrat to draft a measure aimed at severely restricting access to the AR-15-style weapons used by different gunmen in the carnage. Rep. Donald Beyer of Virginia, a member of the tax-writing Ways and Means panel, wants to impose a 1,000% excise tax on assault weapons. New AR-15-style guns range from $500 to over $2,000 depending on location, NBC News reported. That means a 1,000% tax on the weapon would add $5,000 to $20,000 to their final sales price — and would probably keep it out of reach from many younger Americans. That probable...