Oct 20 (Reuters) - The White House told Democratic lawmakers in a meeting on Wednesday that a proposed hike in corporate taxes is unlikely to make it into a final reconciliation bill, according to a congressional source familiar with the discussions. President Joe Biden had proposed increasing the corporate tax rate from 21% to 28%, which would unwind the tax cuts enacted under Republican former President Donald Trump. (Reporting by Jarrett Renshaw; Editing by Leslie Adler) Our Standards: The Thomson Reuters Trust Principles.