That's a proposal made on the same day President Barack Obama and other national Democrats proposed gun control measures in response to mass shootings.
The Colorado measure introduced Wednesday would require businesses to provide an armed security guard for every 50 patrons if the patrons are banned from carrying guns.
The sponsor says movie theaters and shopping malls that ban concealed weapons should be obligated to provide their own armed security. The business gun bill faces dim prospects in the Democratic-controlled Legislature.
Democratic Senate President John Morse says that banks have armed guards but still get robbed.
Obama proposed a federal assault-weapons ban, ammunition limits and other gun controls Wednesday.
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