Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) Director Steve Dettelbach was unable to answer questions about a background check rule enacted by the Biden administration during a Thursday hearing. Republican Rep. Chip Roy of Texas pressed Dettelbach about the rule during a Thursday hearing of the House Judiciary Committee titled “Oversight of the Bureau of Alcohol, Tobacco, Firearms, and Explosives.” Roy asked Dettelbach questions regarding the rule announced by Attorney General Merrick Garland on April 10, asking the ATF director how many firearms would need to be sold before someo…