Fukushima daiichi deposits more radiation in USA than chernoble disaster of 86
http://www.benningtonbanner.com/ci_20057768
"In the United States, cesium-134 and cesium-137 wet dispersion values were higher than for Chernobyl fallout in part due to the U.S. being further downwind," said Wetherbee. "With Chernobyl, there was more opportunity for plume dispersion."
Of Course
Even though Chernobyl was MUCH, MUCH worse than Fukushima in terms of radioactive release; because the predominant motion of air is from west to east; the USA is about 1/3 of an Earth rotation downwind of Japan. However, the USA is 3/4 of an Earth rotation downwind of the Ukraine.
The radionuclides from Chernobyl had to make a 3/4 rotation west to east in order to get to the USA. The much longer transit allowed the Chernobyl plume to disperse more.
So even though Chernobyl was a MUCH worse accident than Fukushima; the fact that Chernobyl is 1/4 revolution downwind of the USA and that Chernobyl debris had to make a 3/4 revolution to get to the USA, limited the exposure due to Chernobyl.
Japan research indicating larger estimate 20-30 % vs Chernobyl
http://mdn.mainichi.jp/mdnnews/news/20120301p2g00m0dm031000c.html
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noting below article releases although small are still occurring
Radioactivity levels leaking at nuke plant fall sharply
http://ajw.asahi.com/article/0311disaster/fukushima/AJ201202280048