How about in the Declaration where Life is enumerated specifically (as the primary) as an unalienable right? That would seem to indicate that government the founders were to found is indeed interested in incentivizing procreation.
I don’t think so. Government has no business telling people that they should procreate. This is not an activity that should be regulated.
People should be free to do what they want with their lives and they shouldn’t get tax breaks because they happen to agree with the marxists in charge.