Rep. Ro Khanna (D-CA) is reportedly being prepared to run for president in 2028 by former President Joe Biden’s chief of staff, who also worked with New York City Mayor Zohran Mamdani and California gubernatorial candidate Xavier Becerra on their respective campaigns. Sources familiar with the matter told Politico’s Playbook this week that Khanna has caught the attention of Ron Klain, an attorney who was an appointee of former President Barack Obama as the White House Ebola Response Coordinator. Klain, who was named Biden’s chief of staff after working as a senior adviser on his 2020 campaign, is now a...