Not a valid excuse, and legislation is required, not preferable.
“Legislative action is always preferable, but weve waited now for years to get Congress to act, and Congress has not acted.
Using this delay as an excuse: a) doesn’t hold water (see above); and b) reflects the will of the people - the same people who put an “obstructionist” Congress in place to stop Obama from going too wild.
EVERY SINGLE THING that Obama or his minions spout can be countered with facts and logic.