While its top executives are still based in Attleboro, Massachusetts, it’s now known as Sensata Technologies Holding NV (ST) of the Netherlands. Treasury Department and some Democrats in Congress are trying to curb. Although these companies have a combined market value of about $75 billion, this tax-avoidance strategy has gotten less attention in Washington than inversions and may be harder to discourage. Shifting to a foreign tax domicile “is looked at hard in every private equity deal,” said Joan Arnold, a tax partner at Pepper Hamilton LLP in Philadelphia.