taxes

The Business Bhutan broke another story in 2010. It revealed that the cabinet had decided to raise indirect taxes on several commodities, including automobiles. The Opposition party claimed that this was ‘unconstitutional,' as the sole right to raise taxes rested with the legislature, and not the executive, and took the government to court. A high court, and subsequently the Supreme Court, upheld the Opposition's stance and said that the government had not complied with the legislative process.

What is the historical significance of this case.
please do not google :)