I suppose it all depends on what you mean by "liberalism." But a racist ideology devoted to the interests of an economic elite isn't compatible with Christianity. By all accounts Jesus came from a poor family and preached mainly among the peasants in the countryside, oppressed by debt and subjection to the Roman empire and their Hasmonean collaborators in Palestine. His message was one of deliverance from hunger, sorrow, illness and sin. God would soon upend the existing order and the righteous would get justice in the kingdom, and all they could eat.

Of course things didn't turn out that way. The pathos of Christianity is that even after the disciples' hopes were crushed, they still believed Jesus was the Messiah, that he was present with them, and that justice was just over the horizon.

Trumpism is the very antithesis of Christianity.