All that the Father giveth me shall come to me; and him that cometh to me I will in no wise cast out.
Jesus answered them, Have not I chosen you twelve, and one of you is a devil? He spake of Judas Iscariot the son of Simon: for he it was that should betray him, being one of the twelve.
When Jesus had thus said, he was troubled in spirit, and testified, and said, Verily, verily, I say unto you, that one of you shall betray me.
Each of the twelve apostles came to Jesus, as it is written, and he did not cast any of them out. One of them chose to betray him. Do you think he had no other choice ?
What do you mean by "Do you think he had no other choice?" There is a difference in physically coming to Jesus, and those who are given by the Father to the Son infallibly. Christ already knew that Judas was not a true believer and was not "of His flock." It is because Judas was not of God that He, ultimately, is God's enemy. Because the world is at war with God, and not because God forces them to be at war with Him.