So what happens to all those Texas lawsuits against the feds?

It depends , but basically it’s up to the new Solicitor General, since he is the one defending the federal government’s actions. Since Paxton assumed office as AG in January 2015, Texas has sued the federal government more than a dozen times, raising questions about White House policy on such a wide range of topics as internet governance, overtime pay, transgender bathrooms, clean power, clean water and immigration.