Congressional Review Act Not Used

 Apparently the Biden administration is opting for slow and possibly sure over fast and challengeable.  That is, rather than using the Congressional Review Act to undo last minute Trump regulations they're using the Administrative Procedure Act process--notice of proposed rulemaking, etc. The CRA could be done, but it has a kicker that when used, the agency can not later issue new regulations the same or reasonably similar to those which were killed.  

In a sense, a CRA kill is a permanent veto unless a future Congress enacts a new authority.