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moving our economy for 160 years. bnsf, the engine that connects us. >> the william and flora hewlett foundation, working to solve social and environmental problems at home and around the world. and with the ongoing support of these institutions and foundations. and... this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> ifill: president obama and governor mitt romney are broadening their critiques of one another as their nominating conventions approach, with a political battle now ful...

marriage. >> brown: and ray suarez examines an investigation into whether g.o.p. money-man sheldon adelson violated a foreign bribery law. >> ifill: plus, hari sreenivasan talks with author william dobson about the techniques modern day dictators use to control protesters. they have really developed excellent crowd control techniques where they would move the crowds through with street cleaning equipment, cleaning the same street corner again and again and again. >> brown: that's all ahead on tonight's newshour. major funding for the pbs newshour has been provided by: moving our econ...

collected millions of dollars from gays and lesbians right after he came out in favor of same-sex marriage.th >> brown: and ray suarez examines an investigation into whether g.o.p. money-man sheldon adelson violated a foreign bribery law. >> ifill: plus, hari sreenivasan talks with author william dobson about the techniques modern day dictators use to control protesters. they have really developed excellent crowd control techniques where they would move the crowds through with street cleaning equipment, cleaning the same street corner again and again and again. >> brown: that's all a...

time to talk to tucker barnes about the weather. >> i think we can officially go with hot today. mid-90s, that is hot. >> not cool. >> 59 or above is hot. >> i think anything about 92 is hot officially. >> i'm thinking more like 86. >> i'm pretty much with wisdom. i was trying to be tough. >> give it up. >> 77 in washington. humidity is 76%. >> we had the rain last night so we are off to a rather humid start as well. winds out of north at five miles per hour. it is not go to be a terrible day. it will be hot today. maybe it won't feel quite as bad but the bottom line is temperatures ...

we've been looking for signs of a rebound and we got one today. a new report shows home prices rose march to april in 19 of the 20 largest cities. only detroit fell. nationally prices were up 1.3%. the research is from standard and poore's case-shiller index. the housing has been the biggest drag on the economy but consider what's been happening lately. house sales are up, mortgage rates are the lowest they've ever been and builders are starting to build again. are we rising at last from the worst real estate collapse since the great depression? we asked jim axelrod to look for the s...