This is a very broad question (and one that will change over the next few weeks and months when the administration and congress weigh in), and could be overly subject to opinion.

But: is this new Executive Order really legislation from the Executive branch that is not allowed to legislate? And/or is this "meta-legislation"? And does that matter?

> President Trump signed an order Monday aimed at cutting regulations on
> businesses, saying that agencies should eliminate at least two
> regulations for each new one.
> 
> The White House later released the text of the order, which added that
> the cost of any new regulation should be offset by eliminating
> regulations with the same costs to businesses. It excluded regulations
> regarding the military. **<a href="https://www.washingtonpost.com/news/energy-environment/wp/2017/01/30/trump-wants-to-cut-two-regulations-on-businesses-for-every-new-one-imposed/?utm_term=.d86e8190b214">Trump wants to scrap two regulations for each new one adopted - The Washington Post</a>**

Could Congress reverse it with their own legislation?