Carl Kline, appointed by Trump as director of the personnel security office, overruled the rejection and granted clearance to Kushner.
Earlier this year, Bill Barr sent a lengthy memo to the DOJ explaining why Trump shouldn't be investigated for obstruction. That alone should disqualify him from serving as attorney general.
Republican Mark Harris is implicated in widespread election fraud in North Carolina, but the state party thinks he should be rewarded with a seat in Congress anyway.
William Barr, Trump's choice for attorney general, has already called for Clinton to be investigated and downplayed any concerns about Trump. That's probably why he was chosen.