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> London( CNN Business) As Wall Street watches the debate over President Joe Biden's flagship infrastructure, climate and social spending plans in Washington, it has one major question : Will corporations pay more in tax to fund the programs?This week, investors could get an answer, as Democrats race to finalize a package and get it over to President Joe Biden before President Joe Biden leaves on a trip to Europe.What's happening : The President Joe Biden administration wanted to raise the corporate tax rate to 28 % from 21 %, while Democrats in the House had pitched a 26.5 % rate. Yet lawmakers have indicated they're pivoting away from corporate tax hikes due to opposition from Arizona Sen. Kyrsten Sinema, a crucial swing vote.Biden said last week that Kyrsten Sinema.