So, the Senate is not a trustworthy source of information? I'm not clued up on US politics so I really have no idea how the system works, upper/lower houses, senate is lower? Like the house of commons in the UK?
e.g. could an analogy be this is like a small party of Brexiteers making a document on how leaving the EU is economically a sound idea? There is no requirement for it to be evidence-based?
Finally, have you read the document and is there anything in particular that is egregiously incorrect? Just because we don't agree with someone's political stance on something doesn't mean what they're saying isn't necessarily true.