Can Congress defund federal courts with key Trump budget process?

As Republicans look for ways to rein in federal judges issuing countless orders to halt the Trump administration's action on immigration in particular, a number of potential avenues for doing so are being considered. 

However, the use of a key budget process that lowers the Senate's threshold to 51 votes to defund certain courts could face significant obstacles.

Rep. Chip Roy, R-Texas, House Freedom Caucus policy chair and chair of the House Judiciary Committee's subcommittee on the Constitution...