(Bloomberg) -- A Houston engineering firm is challenging a Texas law barring the state from doing business with companies participating in the boycott, divestment and sanctions (BDS) movement against Israel over its treatment of Palestinians..A&R Engineering and Testing Inc. said in a complaint filed Friday in federal court in Houston that the 2017 law violates its First Amendment right to participate in economic boycotts as a form of protest..According to the suit, A&R has done more than $2 million of business with the city Houston over the past two decades but refused to sign a contract renewal last month acknowledging...