The selling of carbon offset credits is a weird concept invented by liberals. They essentially are saying it is ok to pollute the air as long as the polluters purchase credits from the government.   The greater the amount of the tax credit, the more polluters can pollute.  It is laughable.  It is like the Catholic Church selling indulgences in the late medieval period to lessen or forgive the punishment for sins.  The more Catholics paid, the more they could sin.