Connecticut joins California, New Jersey and Wisconsin in putting public financing toward stem cell research.
They include California, Massachusetts, New Jersey and Texas.
Several states, among them California, Texas, New Jersey and Connecticut, require health plans to cover treatment.
He said California, New Jersey and Michigan have not yet made a decision.
California, New Jersey and Washington, for instance, operate programs that require private-sector employers to pay their employees who utilize maternity leave at partial replacement rates.
But it's tougher in California, Texas, Ohio, New Jersey and Connecticut.
Sales tax is collected for California, Florida, New Jersey and Pennsylvania, where the company is based.
Democrats said this would override provisions of state laws adopted by 10 states, including California, New Jersey and Texas.
California, Delaware, New Jersey and Minnesota already have or are completing regulations on such health care for children, she said.