Meek Mill bailed on a visit to 1600 Pennsylvania Avenue Friday after a late-night call from Jay-Z ... TMZ has learned. TMZ broke the story ... Meek agreed to travel to the White House to discuss prison reform. President Trump is hosting a Prison Reform Summit. Participants include members of Congress, various activists and, clearly, people who have become victims of the system. We're told Jay called Meek Thursday night and made it clear ... meeting with Trump would be problematic for his image and for the cause. We're told other high-profile African-Americans also called Meek and voiced serious concern....