If your employer's plan costs you less than 9.5% of your income to cover yourself AND the plan offers coverage for your spouse and childen, then your spouse and children cannot get subsidized coverage on the online marketplace. This is known as the "family glitch": your spouse and children's coverage on your employer's plan is not required to be affordable. It only has to be available.
This creates a huge burden for employees with coverage and unaffordable family plans.
Fix it!