White House Chief of Staff Ron Klain ordered a freeze on federal regulations in his first official act on Jan. 20, putting the breaks on any new and pending rules until they can be reviewed by appointees of President Joe Biden. In a memo sent to the heads of executive agencies and departments, Klain said that rules which have been sent to the Office of the Federal Register but not yet published in the Federal Register should be withdrawn until they are reviewed. For rules which have been published or otherwise issued but have not taken effect, Klain asked the heads of agencies to consider postponing the date on which the rules become effective by 60 days. During the postponement, Klain asked the agencies to consider opening up a 30-day comment period. “For those rules that raise no substantial questions of fact, law, or policy, no further action needs to be …