claim: Rob Portman voted for the bipartisan bill to affirm climate change is real, humans significantly contribute to it and it needs to be addressed.
evidence: In the Paleocene, with a global average temperature of about 24–25 °C (75–77 °F), compared to 14 °C (57 °F) in more recent times, the Earth had a greenhouse climate without permanent ice sheets at the poles, like the preceding Mesozoic.