Private equity firm Blackstone is considering a small minority investment in TikTok's American operations.Blackstone is evaluating whether to join non-Chinese shareholders to bid for TikTok's American unit.The plan is to spin off TikTok U.S. into a separate entity, reducing Chinese ownership to under 20% to comply with U.S. law.The future of TikTok in the U.S. is uncertain as the deadline for divestment approaches on April 5.