Click to view a price quote on BA. : The Fed has raised interest rates by 3 percentage points since March to fight the 8.3% surge in consumer prices for the 12 months through August. But hedge-fund star Bill Ackman, chief executive of Pershing Square Capital Management, has another idea. “Why don’t we reduce the Federal Reserve’s need to raise rates by expanding immigration now?” he wrote on Twitter. “Doesn’t it make more sense to moderate wage inflation with increased immigration than by raising rates, destroying demand, putting people out of work, and causing a recession?,” Ackman tweeted.