Several points, some minor:
#1
Statutes Prohibiting Strikes in Certain Industries
Some state and federal laws either bar workers in certain industries from striking, or significantly limit their right to go on strike. The Railway Labor Act (RLA), for example, applies to workers in the [size=150]railroad and airline industries. [/size]Congress first passed this law in 1926, and has amended it several times. The statute makes a distinction between “major” disputes, which may arise while negotiating a CBA; and “minor” disputes, which involve disagreements about existing CBAs. Workers may go on strike because of a major dispute, but only after they have gone through a lengthy process of negotiation and mediation with management. For minor disputes, workers must use mediation procedures established by the statute. Federal courts have authority to stop a union from striking, which essentially orders the workers to go back to work.
https://www.lawyers.com/legal-info/labor-employment-law/wage-and-hour-law/when-is-going-on-strike-illegal.html#:~:text=The%20NLRA%20protects%20workers%20who,cannot%20fire%20the%20striking%20workers.#2
The correct spelling is diesel.
#3
The price of diesel is higher than gas because the international demand for it is greater, it’s more heavily taxed, and recent EPA regulations have increased its refining costs.
Both diesel fuel and gasoline are produced from the same exact materials—crude oil and natural gas. Yet, somehow, a gallon of diesel fuel is much more expensive than a gallon of gasoline.
Why is diesel fuel more expensive than gasoline?
According to the U.S. Energy Information Administration, diesel prices have been consistently higher than gasoline prices as far back as 2004. But, over the last year, the price gap has gotten wider than ever.
Today, if you drive a diesel car (or any diesel vehicle), you’ll have to pay about $1 more per gallon for fuel—which is a lot considering gas prices have repeatedly exceeded $5/gallon in 2022.
There are many reasons why diesel is so much more expensive than gas. Some of these reasons are recent developments, while others are long-standing issues. And while many of the contributing factors mainly concern U.S. politics, it’s important to remember that oil is an international trade. Events all over the world play a role in determining what you pay at the pump.
https://getjerry.com/car-repair/why-is-diesel-more-expensive-than-gas#4
The Air Traffic Controllers were indeed in a union when they were fired by President Reagan. The Union was called PATCO (Professional Air Traffic Controllers Organization) and was decertified in 1981.
#5
Under #1, you see that workers in the Railroad and Airlines industry are restricted from striking and the US Government can pass laws to intervene in the Labor Agreements. Those industries are viewed as too "valuable" and a strike there would be too "disruptive" to the US Economy, (my words of choice in quotes) to summarize.