Adding step-children to step-mom health insurance.

[user177]

My husband and I are legally married. My stepson is 7 years and lives at home with Daddy and I. He normally sees his mom everyother weekend.
His parents don’t have a settlement/child support or time sharing agreement through the court system and his father has been the one always covering health insurance and all other expenses for him. He is currently covered under my husband's policy.
An opportunity has risen to add him to my health insurance at a lower cost.
Considering that we are legally married and he lives with us full time,
could this represent a legal problem for my husband in the future if I(the stepmom) wil be the one providing health coverage for him instead of his father?
If the mom were to file for a shared parenting plan and collect child support from my husband in the future, will this be of negative impact for my husband?

[Attorney Howard Iken]

I do not see a downside. This makes sense to me.