By Lyman Stone, First Things - In 2015, Poland’s conservative Law and Justice Party proposed a plan called “500+ Families,” which would give Polish families 500 zlotys, or about $150, per month for every child they have after their first. For a family with three children, that’s about $300 per month in untaxed cash income, or about $3,600 a year—nearly double the amount of the U.S.’s new expanded child tax credit.