WASHINGTON (AP) — The Trump administration embarked Friday on new efforts to study and possibly dismantle some of the tax and financial regulations established by former President Barack Obama. President Donald Trump will sign an executive order to review tax regulations set last year by his predecessor, as well as two memos to potentially reconsider major elements of the 2010 Dodd-Frank financial reforms passed in the wake of the Great Recession. The review of tax regulations could give greater leeway to companies looking to shelter income overseas, or simply seeking to reduce paperwork related to the enforcement of such regulations. Treasury Secretary Steven Mnuchin said a "significant" issue to be examined will be the crackdown by Obama on inversions, which are mergers that enable U.S.