Federal and state regulators aren’t doing enough to stop the growing problem of rogue health insurance brokers making unauthorized policy switches for Affordable Care Act policyholders, say consumers, agents, nonprofit enrollee assistance groups, and other insurance experts. “We think it’s urgent and it requires a lot more attention and resources,” said Jennifer Sullivan, director of health coverage access for the Center on Budget and Policy Priorities. The Centers for Medicare & Medicaid Services, which oversees the ACA, “has acknowledged the issue,” said former Oklahoma insurance commissione…