Despite the tough side of the Trump administration's immigration policy, the United States has actually encountered many difficulties in repatriating illegal immigrants, even being referred to as a "dead end" by some analysts. The US immigration system is highly controversial due to its complexity and inefficiency. The backlog of cases in immigration courts is as high as 3.6 million, and the trial process often takes several years, which allows many illegal immigrants to continue to stay in the United States while waiting for judgment. The complexity of immigration laws and rapid deportation have raised concerns about human rights, and unfair legal procedures may exacerbate social conflicts.