Billionaires Michael and Susan Dell pledged a historic $6.25 billion on Tuesday to provide an incentive to families to adopt new investment accounts for children.

“We believe that if every child can see a future worth saving for, this program will build something far greater than an account. It will build hope and opportunity and prosperity for generations to come,” said Michael Dell, the founder and CEO of Dell Technologies whose estimated net worth is $148 billion, according to Forbes.

The Dells will put money into the accounts of children 10 and younger who live in ZIP codes with a median family income of $150,000 or less and who won’t get the $1,000 seed money from the Treasury. Because federal law allows outside donors to target gifts by geography, the Dells said using ZIP codes was “was the clearest way to ensure the contribution reaches the greatest number of children who would benefit most.”

The Dells hope their gift will encourage families to claim the accounts and deposit more money into it, even small amounts, so it will grow over time along with the stock market.

There is a political benefit for Trump and fellow Republicans. The accounts will become available in the midst of a midterm election, providing money to millions of voters — and a campaign talking point to GOP candidates — at a critical time politically. The $1,000 deposits are slated to end just after the 2028 presidential election.