Not a single decision so far was related to national security. The checks and balances exist and they are/were working, and this is an attempt to circumvent that.
But don't forget the emergency narrative: "We're being invaded!" and "Governors (bureaucrats, etc.) aren't doing what I want them to do it's now an emergency!". This is not only how our dictatorial executive overreaches, but also how its supporters justify the means in their minds.