More than 250 tech companies signed a letter demanding greater transparency from Congress and denouncing regulatory language that appears in leaked parts of the controversial Trans-Pacific Partnership trade deal.

The Guardian reports:

The TPP would create an environment hostile to journalists and whistleblowers, said policy directors for the Electronic Frontier Foundation and Fight for the Future, co-authors of the letter. “TPP’s trade secrets provisions could make it a crime for people to reveal corporate wrongdoing ‘through a computer system’,” says the letter. “The language is dangerously vague, and enables signatory countries to enact rules that would ban reporting on timely, critical issues affecting the public.”

Among the signatories are activist, sci-fi author and Guardian tech columnist Cory Doctorow. “Democracies make their laws in public, not in smoke-filled rooms,” Doctorow wrote. “If TPP’s backers truly believed that they were doing the people’s work, they’d have invited the people into the room. The fact that they went to extreme, unprecedented measures to stop anyone from finding out what was going on – even going so far as to threaten Congress with jail if they spoke about it – tells you that this is something being done *to* Americans, not *for* Americans.”

Also on the list were prominent members of the open source community, including David Heinemeier Hansson, creator of the popular Ruby on Rails web development framework, image hosting company Imgur and domain name manager Namecheap.

There was a notable absence from the letter of big, international tech companies like Apple, Google and Facebook. Apple and AT&T are part of the president’s International Trade Advisory Committee (which advises the Oval Office on matters relating to industry) and their representatives have presumably been able to read sections of the bill that would apply to their industry.