The document is a "Majority Staff Report". And the only listed authors are from one party. By definition it is a partisan document. That doesn't mean that it's 100% false (or 100% true), but that's the context for the report.

Regardless of whether or not anything was exaggerated, it's still a partisan, political document. The contents don't change that. This would still be the case if it was a "Minority Staff Report" too...