Why did the US refuse to abide by a World Court decision?

On this day, Jan 18th. 1986

"The World Court heard Nicaragua's case and decided against the United States; it charged that the U.S. violated international law with its actions against the Sandinistas, and ordered it to pay reparations to Nicaragua in June 1986. The U.S. government ignored the decision."

Was it to Protect Reagan's blunder?

When we remember we are all mad, the mysteries disappear and life stands explained. Mark Twain

“No lesson is so deeply inculcated by the experience of life as that you should NEVER TRUST EXPERTS.” Lord Salisbury