Up to 10 Republican House lawmakers are open to increasing the corporate tax rate, a senior GOP member estimated, possibly threatening Donald Trump’s future plans if he is reelected. Trump’s 2017 tax cuts lowered the corporate tax rate from 35% to 21%, a move hailed by businesses. But that levy, along with a host of other lower rates, is set to expire at the end of 2025 and some Republicans are balking at the $4.5 trillion price tag of extending them, setting up a major policy fight for the...