A federal judge in Virginia has ruled that Google acted illegally to maintain a monopoly over ad tech, potentially forcing the company to restructure its operations. The judge sided with the government on two of its three accusations against Google, ruling that it held a monopoly on tools used by publishers to host ad space and on the software used to facilitate online-ad transactions. The Trump administration will now assess the ruling to determine whether to push Google to break apart its ad tech business. This is the second time in a year that a U.S. court has found Google to have illegally maintained a monopoly.