With President-elect Joe Biden set to assume office and two newly-elected Georgia Democrat senators poised to be sworn in on Wednesday, Texas Republicans are preparing to mount a flurry of legal challenges to push back against the incoming administration’s progressive agenda. The Biden administration has signaled a left-leaning agenda on energy, taxes, immigration, health care, and other priorities. Biden has vowed to rejoin the Paris Climate Accord and take far-reaching steps on climate change, including seeking to cut greenhouse gas emissions by half by 2030 and effectively ending them by around 2050, sparking existential fears from the fossil fuel industry, a key economic pillar for Texas. Biden has also proposed sweeping immigration reform that would create a pathway to citizenship for more than 11 million illegal immigrants, and plans to roll back Trump’s corporate tax cuts and raise income tax. Texas Gov. Greg Abbott, who while serving as the state’s attorney …