That’s a narrow-minded view. Sure, environmental regulations cost oil and gas companies money.
But this fails to consider the external costs to society: increased healthcare costs and reduced life expectancy due to air and water pollution, future costs of global heating including property damage to coastal cities from rising sea levels, agricultural regions becoming less productive, etc.
Secondly, reducing dependence on fossil fuels (many of which are imported, even in America) will improve energy security and reduce energy costs in the long term. Great economic benefits, as well as environmental ones.