Editor
WASHINGTON — As the House committee investigating Jan. 6 used its prime-time hearing on Thursday to document President Donald J. Trump’s lack of forceful response to the attack on the Capitol by his supporters, it again raised one of the enduring mysteries of that day: Why did it take so long to deploy the National Guard?
The hearing did not fully answer the question, but it shed light on Mr. Trump’s refusal to order troops to assist…
