During the hearing, he “criticized former FBI Director James Comey for his decision, mere weeks before the 2016 election, to publicly criticize Hillary Clinton when announcing the decision to not prosecute her over her email security while secretary of state. ‘If you’re not going to indict somebody, you don’t stand up there and unload negative information,’ he explained. That raises questions about how much information he’ll disclose about the Russia investigation if it’s not used to bring criminal charges.”
New Republic

He also “[claimed] not to know what [the emoluments clause] is… but the emoluments clause — and litigation around it — has become a key flashpoint in the larger debate over Trump’s financial conflicts of interest and lack of disclosure about his finances… Under the circumstances, the safest path for Barr was probably to say nothing — which is what he did.”
Vox

“Trump has eschewed job candidates with Bush ties. As a result, Trump’s most important appointments have been mostly inexperienced… [But Barr is] someone who is proudly and in a highly traditional way presenting himself as a mainstream, experienced, Republican official… Expect Barr to defend the president’s legal prerogatives aggressively… But also expect that, if Mueller can show Barr definitively that Trump colluded with Russia to subvert [the] 2016 election, committed crimes or engaged in an unlawful cover-up, Barr will listen — and act accordingly.”
Bloomberg

Barr stated, “‘In the current environment, the American people have to know that there are places in the government where the rule of law, not politics, holds sway’…That was an important and reassuring message… [Barr] is a conservative Republican with views that not every American will embrace. But he came across as highly qualified and committed to the traditions, procedures and mores of the Justice Department.”
Washington Post