Is there any evidence of real meaningful resistance to Trump within the US government? Concerned European looking for hope

Obviously judges are blocking EO's and protests are everywhere, but compare that to the people in Congress or the Senate, Is there anyone able to do something right now who actually is? Democrats can voice their disapproval all they want, but is there anything really being done?

Everything seems so hopeless, like its slowly sliding into a dictatorship, and I need to know if that fear is unfounded or not.