EXCLUSIVE — Eugene Vindman, a Trump whistleblower-turned-Democratic congressional candidate in Virginia, is facing a Federal Election Commission complaint over his campaign’s allegedly illegal coordination with an outside group. The complaint, filed with the FEC on Wednesday by the Functional Government Initiative, calls for the agency to investigate Vindman, the Democrat’s campaign, and a political action committee called VoteVets. That’s because, in the telling of the watchdog group, a recent interaction with the press appears to show that VoteVets, which supports progressive veterans for office such as Vindman, made an “excessive and impermissible” in-kind contribution to Vindman’s campaign. “The public is...