From the article:

Hundreds of scientists and about one-third of the members of Mexico’s Congress have filed lawsuits declaring a recently passed science law unconstitutional. They say that the legislation, called the General Law on Humanities, Sciences, Technologies and Innovation, was passed using an irregular procedure and that it could harm scientific development in the country.

More than 200 lawmakers in opposition to the law filed their complaint with Mexico’s Supreme Court of Justice of the Nation on 6 and 7 June, the last days of a 30-day period during which they could challenge the law’s constitutionality. If the Supreme Court agrees that the law was passed atypically, “it will be overturned”, says Brasil Acosta, a member of a unit of Mexico’s Congress called the Chamber of Deputies…

On 28 April, senators from the Morena party called a recess during an active Senate session and then held an ‘emergency session’ in another building to vote on the science bill, as well as on 19 others. The bills were passed in the early hours of the next morning…

Aside from how the law was passed, scientists and legislators are concerned about how the new legislation could affect science in the country. They say it concentrates power over research in the Mexican government. For instance, the law establishes a government council that will decide which science projects to prioritize for funding on the basis of their potential to solve national problems.