WASHINGTON — Texas Attorney General Ken Paxton is leading a group of 50 attorneys general in filing an antitrust probe into Google’s business practices.   The investigation will look into whether Alphabet Inc, the parent company of Google and its subsidiaries, monopolize the online advertising and search engine markets while using private user information. Paxton announced the preliminary investigation on the steps of the U.S. Supreme Court building Monday afternoon, accompanied by 13 other attorneys general who are part of the bipartisan coalition.   Paxton’s spokesperson, Marc Rylander, called the investigation “nearly unprecedented." Every U.S. state and territory is represented in the ...