Virginia's fight over whether to keep subsidizing data centers is picking up speed with the state budget due at the end of June. In Hampton, Sens. Mamie Locke and Louise Lucas said the Commonwealth should stop shielding a dominant industry from taxes. What happened? With the June 30 budget deadline nearing, Locke and Lucas used a Hampton rally to press lawmakers to repeal Virginia's sales and use tax exemption for data centers, according to WTKR…