"often receiving benefits on behalf of U.S.-born children"
How many of those U S citizens do you want to starve and make homeless?
4.6 MILLION households of 'non citizens', whew! That's 3.6% of the total households. Sky is falling.
% of GDP welfare costs:
Early 1960s, welfare cost about two percent of GDP.
After 1980 welfare spending fluctuated between 3 and 4 percent of GDP.
Welfare costs declined from 3.4 percent of GDP during the 1990-91 recession to a low of 2.4 percent of GDP in 2000.
In the 2001-02 recession welfare costs increased to 3.1 percent of GDP in 2003 and then declined to 2.5 percent of GDP by 2007. But the Great Recession of 2009-10 produced an explosion in welfare costs to a peak of 4.75 percent of GDP in 2010.
Welfare costs are estimated at 2.51 percent of GDP by 2015 and below 2 percent of GDP by 2020.
https://www.usgovernmentspending.com/welfare_spending