In March 2019, the House of Representatives considered lowering the minimum voting age to 16 as part of a voting-rights reform bill. The measure failed, with 125 Democrats (and one Republican from Texas, Michael Burgess) supporting it, and 108 Democrats and all other Republicans against it.
The Democratic Speaker of the House, Nancy Pelosi, has expressed support for the idea. A few 2020 Democratic presidential candidates, including Andrew Yang, endorsed the idea, too. Joe Biden and Kamala Harris did not respond to a Washington Post survey on the subject during the primaries.
Overall public support for the idea appears weak. A 2019 poll for The Hill showed strong opposition to lowering the voting age to 16—with 89% of GOP respondents and 78% of Democrat respondents opposed.