The attorney general answered some questions but not others, at a Senate hearing.

…Mr Sessions is far from the first politician to seek refuge in a fuzzy memory under sharp questioning. Definitive statements proven inaccurate under oath are more prone to accusations of perjury.

…When it came time to discuss his conversations with the president, Mr Sessions demurred, noting that he wanted to give Mr Trump the opportunity to review the question before sharing his thoughts. It was as if the attorney general was trying to pre-emptively invoke executive privilege – the right of a president to candid counsel from his advisers – without using those magic words.

What Sessions did (and didn’t) tell us – BBC News

hmmm