These new accounts might provide a nice bonus for new parents, but most Americans might not be able to take full advantage of them.

The payments, part of the new domestic policy law, are for U.S. citizens born this year through 2028. The idea is that the money in the accounts will have many years to grow.

The law will also "increase by 10 million the number of people without health insurance" over the coming decade, the nonpartisan Congressional Budget Office estimated.