Not only have the states never delegated to the feds, expressly via the Constitution, the specific power to regulate INTRAstate environmental issues, but a previous generation of state sovereignty-respecting justices had clarified that the neither have the states delegated to the feds the specific power to regulate intrastate commerce.
State inspection laws, health laws, and laws for regulating the internal commerce of a State, and those which respect turnpike roads, ferries, &c. are not within the power granted to Congress [emphases added]. Gibbons v. Ogden, 1824.
Also, patriots need to stop blaming everything on Obama. This is because the corrupt, RINO-controlled Congress has always had the constitutional authority to impeach and remove lawless Obama from office, but has stubbornly refused to do so.
In fact, it can be argued that Obama is Congresss useful idiot, corrupt lawmakers keeping their voting records clean by letting Obama get away with stealing legislative branch powers to do all the unconstitutional things that Congress wants to do.
In other words, by keeping their voting records clean by letting Obama do their dirty work for them, corrupt lawmakers are able to fool low-information patriots into reelecting them.
So it can also be argued that Congress, not Obama, is wrongly interfering with intrastate commerce and environmental issues, forcing Peabody Coal to close its doors.
Remember in November !
If patriots elect Trump, Cruz, or whatever conservative they elect, they will also need to elect a new, state sovereignty-respecting Congress that will work within its constitutional Article I, Section 8-limited powers to not only support the president, but also put a stop to unconstitutional federal government interference in state affairs.
In fact, note that such a Congress will also probably be willing to fire state sovereignty-ignoring activist justices.
The Interstate Commerce Clause is the most abused section of the Constitution, and has been held up time and time again by the courts.
If one single lump of coal has ever crossed state lines, Congress has the power to regulate all of it. If one molecule of CO2 crosses state lines when it is burned, Congress has the power to regulate all of it. If coal is mined and used entirely within one state but potentially displaces coal that could have been shipped in from out of state, Congress has the power to regulate it (for proof see Wickard v. Filburn).
I agree with your argument, but your argument is not how the current state of law stands.