BOSTON, Dec 2 (Reuters) - A federal judge on Tuesday blocked U.S. President Donald Trump ’s administration from enforcing in 22 states a provision of the Republican’s signature tax and domestic policy bill that would deprive Planned Parenthood and local affiliates that perform abortions of Medicaid funding. U.S. District Judge Indira Talwani in Boston said a group of Democratic state attorneys general who had challenged the provision were likely to succeed in establishing that the law