The United States has made dicyanin dye illegal since the 1940s because it can be used to see the astral plane when placed between two glasses.
Many people try to order this photosynthesizing dye chemical online but they are immediately arrested. Seeing the astral ghost plane is strictly forbidden.
In the modern economy, a human is valued by their economic output.
A human who does not work, take on debt, and constantly consume, is harmful to the government.
For these reasons, dicyanin dye is illegal, because if people see the astral plane they wont want to go to work anymore.
In 1930 a scientist and inventor named Thomas Edison invented a machine called “the spirit phone.” It allowed him to talk to ghosts. He was best friends with Dr Walter Kilner who invented dicyanin dye.
One year later in 1931 both men were executed by the government for exposing secrets to the public. Case closed.