They would be extremely biased and even vindictive towards Christians. We would have to rename the U.S. Department of Justice to U.S. Department of Death, Punishment, and Violence. "Justice" would become a foreign concept.
The U.S. Constitution is completely incompatible with sharia law. There is no way that Christians can co-exist with Muslims because their belief systems are entirely different. The fallacy of the "coexist" movement was invented merely to enable the shoehorning of Muslim culture into America so that it could grow into a radical element that could overcome American culture. A form of cancer in other words.
Remember that when you see any inane or subversive idea put into the culture by the left there are usually paid professionals who are behind it and their salaries will likely be paid for by you and me the taxpayers. The Democrats have been building the empire of the left here in the Unites States since the 1960s or even earlier. People who are gullible enough to vote Democrat have no idea the harm that they have done to this country. We know that Black Lives Matter was invented by professional leftists and the protestor/agitators are actually paid for their time. The city of Somerville, MA has a banner on its city hall that says Black Lives Matter. Of course, Somerville in a Democrat run city.