The endangerment finding released by the Environmental Protection Agency earlier this week—which states that greenhouse gases like carbon dioxide are a threat to public health and welfare—sure seems to rub some politicians the wrong way. Rep. Todd Tiahrt (R-Kan.), a U.S. Senate hopeful, made an attempt to keep any funding allocated in an omnibus spending bill to the EPA from being spent on regulations based on the endangerment finding.

Tiahrt’s amendment to the $446.8 billion dollar spending bill was rejected last night in a 5-9 vote. A similar unsuccessful assault on EPA regulation of global warming pollution was mounted in September by Sen. Lisa Murkowski (R-AK). Her amendment, which would have prevented the EPA for one year from spending any money allocated to them through an appropriations bill on regulating stationary sources of carbon pollution like power plants, didn’t even get a vote.

These attempts to block funding for regulations, compared to the enthusiasm expressed by many at the announcement of the endangerment finding, illustrate a central issue: Using the Clean Air Act to regulate global warming pollution from cars, trucks, power plants, factories and other sources is a divisive issue. Moving forward, if and when EPA rolls out proposed regulations for these sources, it’ll be interesting to see who lines up on which side of the argument.