Identifying Logical Fallacies in Arguments

In a recent debate on climate change, a politician stated, 'If we don't take immediate action to reduce carbon emissions, we will face catastrophic consequences for our environment. Therefore, anyone who opposes new environmental regulations is simply ignoring scientific facts and endangering future generations.'

This argument was met with criticism from some participants, who labeled this line of reasoning as fallacious. Which logical fallacy does the politician's argument exhibit?