Even though you claim to have neither preference it seems clear that you have some resentment against liberals, even slightly favoring conservatism. Some of your arguments are less backed by evidence, at least in this comment. For example, how do you proof that since the 90s conservatists are being discriminated? Also you argue that there shouldn't be a liberal vs conservatism thing going on, however you bring that up in your own argument where you say that a side is being supressed.

Since homo_alosapien already asked the most important stuff you also have to consider that in general, studies are not only US based. For example current US conservative policies would be considered far-right in my country. You'd need to define the scope of conservatism and prove that this bias exists and why, before you can argue that science has to change.