Yes, any individual who desires to do so can inquire about becoming a member of the Jewish faith community. I thought that only those born into Judaism can be Jewish. Yes, the majority of those who are Jewish are Jewish by virtue of having been born into Judaism. But that does not mean that others are precluded from choosing to be Jewish. For instance, a child through adoption and specific rites and rituals can be a member of the Jewish faith community.
Adults can elect to be members of the Jewish faith community by the process of conversion.
The Biblical concept of being God s chosen people does not exclude others from joining them in the covenant. The Hebrew Bible instructs us that those who are willing to accept the burden and responsibility of God s truth can be called His people. The emphasis is on the willingness of those who accept God s law, not on the exclusiveness of those chosen. All inquiries are strictly confidential.