How much aid does Palestine receive every year from the US? I'm looking for unbiased sources, because a pro-Israel source will likely overstate it and a pro-Palestine source will likely understate it.
According to a report from the Congressional Research Service, the US has given an average of $400 million or so per year in an economic support fund, and around $100 million per year in security assistance funds, since FY2008. (In FY2015, it's $370M in economic support, $70M in security assistance; the numbers are skewed high by abnormally high aid in FY2009, and other years have seen around half the aid of that year). Economic support aid is distributed partly by USAID via vetted contractors, and partly directly to the Palestinian Authority under waivers issued by the President (the waiver numbers fluctuate a lot year-to-year, but have totaled $900M under Obama's administration as of 2014; this is taken out of the economic support fund). So, the average is around $500M/year in aid administered by the US.
In addition, the US is a major contributor to the U.N. Relief and Works Agency for Palestine Refugees in the Near East (UNRWA), giving around $250M/year to them. Add that in, and an average is in the ballpark of $750M/year, with some fluctuation (but that's around the amount; more details are in that report).