Faced with major blowback over its $2 trillion infrastructure proposal, the Biden administration is rolling out a campaign to justify why it needs to hike corporate taxes to fund the massive plan. But President Joe Biden also left the door open Wednesday to negotiate one of the most contentious provisions — raising the corporate tax rate to 28%.Faced with major blowback over its $2 trillion infrastructure proposal, the Biden administration is rolling out a campaign to justify why it needs to hike corporate taxes to fund the massive plan. But President Joe Biden also left the door open Wednesday to negotiate one of the most contentious provisions — raising the corporate tax rate to 28%.