President Donald Trump is looking for ways to make it easier for Americans to save and spend in retirement.

Specifically, an executive order Trump signed seeks a review of how required minimum distributions from 401(k) plans and individual retirement accounts are calculated, and for regulators to see how small businesses can more easily band together to offer retirement plans to their workers.

As it stands, retirees must begin taking withdrawals, or RMDs, at age 70½. The amount they must take out annually is based on life expectancy tables issued by the IRS. The purpose of reviewing the rules would be to update those tables and allow account holders to take lower RMDs. (Roth IRAs do not come with mandated distributions until after the death of the owner.)

The last time the IRS life expectancy tables were updated was in April 2002, according to the Treasury Department. Since then, Americans have been living longer, with the average life expectancy rising to about 78½ years from under 77 in 2002, data from the Federal Reserve Bank of St. Louis show.

Meanwhile, small businesses face obstacles in teaming up to offer 401(k) plans because current law allows only related businesses — i.e., members of a trade association — to join forces in so-called multiple employer plans.

Additionally, it can be costly and burdensome for small companies to set up and maintain retirement plans on their own. Research from The Pew Charitable Trusts shows that 37 percent of small-business owners say such plans are too expensive to set up, and 22 percent say their organization does not have the resources to administer a plan.