That EcoWatch article links (link is also below) to the full letter by Betsy Southerland. Here’s an excerpt:
In addition to defunding implementation of existing environmental regulations at the local, state and federal level, the President goes further by requiring that any new regulation be accompanied by repeal of two existing regulations of equal or greater cost. To implement this “regulation trading” program, EPA will have to choose which Congressional law to ignore, and face litigation through costly citizen suits. This poses a real Sophie’s choice for public health agencies like EPA. Should EPA repeal two existing rules protecting infants from neurotoxins in order to promulgate a new rule protecting adults from
a newly discovered liver toxin? Faced with such painful choices,
the best possible outcome for the American people would be regulatory paralysis where no new rules are released so that existing protections remain in place.
Here is a link to her entire statement which is a .pdf file.