In July 2021, JD Vance praised Hungary's illiberal leader, Viktor Orbán, for encouraging married couples to have children and he proposed that the USA should reward couples who have multiple babies.
Vance also proposed giving the vote to all children, but letting their parents control those votes. (i.e. families with children would have more power.)
Note: I attended Vance's 2021 speech, in an effort to better understand the right. The Guardian's reporting is accurate.
https://www.theguardian.com/us-news/2021/jul/26/ohio-senate-candidate-jd-vance