Health Secretary Robert F. Kennedy spoke reverently about Head Start, which was started by his uncle Sargent Shriver under President Lyndon B. Johnson. But the changes would undermine many of the things that make Head Start distinct from other early education programs, according to current and former Head Start leaders. “This version of Head Start is a shell of the program,” said Khari Garvin, who oversaw Head Start under Democratic President Joe Biden. What makes Head Start differentHead Start is governed by more than 100 pages of regulations. “They’re saying they’re going to serve all these other kids,” said Jenny Mauer, head of the Wisconsin Head Start Association.