(It’s because the Pharisees had seared away their consciences... and it looks like you are among them, frankly, with the usual excuses they gave for how they treated adulteresses.)
The OT proscribed death for adultery. That was OLD, not NEW. Jesus came to fulfill and destroy and build again. He didn't demand death, He demanded repentance....and repentance cannot be truly felt without knowing the shame of violating the wishes of God for His children to be and act in His image.
Really....is this the conversation that relates to Cruz/Trump and the struggle to rebuild this nation?