It's not quite that simple. Christians aren't expected to obey local laws that are directly at odds with their faith; eg a law passed banning discussing ones religion would not be sinful to ignore, because their faith directly commands them to spread the word. Cases requiring them to renounce their beliefs entirely, or take actions that are against their own faith are similarly exceptions.

Basically, God is to be served first, local law second. Renouncing ones faith is against gods law. Smoking pot is not against Gods law, but neither is is specifically protected as a right by Gods law, and as such falls under local law. Adultery is against Gods law and many local laws, but the penalty of stoning to death noted for it in the old testament does not apply, as it is not a specific mandate by god that all christians/jews are responsible for the stoning, merely that they are responsible for the sin if they are involved with it- carrying out the execution would not be against God's law, but it would violate local law. Failing to perform the execution does not violate God's law, and is in-line with local law.

In that case I switch my side.

If some Christians say yes, and some say no, the answer is "Yes, but we don't all have to follow that one"