Texas Asserts Sovereign Immunity

It seems that the Texas government has asserted sovereign immunity over the US Congress.

Texas is asserting its sovereign immunity against Congress, telling Democrats on two congressional committees this week that the state has no obligation to comply with their investigative demands.
Attorney General Ken Paxton’s office says that as a state with sovereign powers under the Constitution, Texas can’t be treated like a federal agency or Cabinet secretary who can be compelled to comply.

I've often wondered why states did not more often invoke the 10th Amendment in certain matters, telling Congress (or federal bureaucrats) to go pound sand.

For those who are not familiar the 10th Amendment says:

 The powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people.

Congress, over the past decades, has assumed a lot of powers not delegated to it by the Constitution, and sometimes the states should rein in the federal bureaucracy.