Kamala should be ignored until an official candidate is selected by the DNC.

Any questions about the Presidential race should be met with "I don't know who the DNC will choose"

Any questions about a debate should be responded with "I plan to debate whoever the DNC selects, until the DNC selects someone we don't know who their candidate will be." "If the DNC choose Kamala, I'd be delighted to debate her."

Etc.

Do not engage and provide FREE market research for the Democrats until they choose their candidate.