J.M. Smucker Co. announced last month that it would donate $1 million to charity, invest $20 million in employee pension plans, and give $1,000 bonuses to some 5,000 employees. The food manufacturer is hardly alone. More than 400 U.S. employers have announced similar moves as a result of tax reform’s passage. What House Minority Leader Nancy Pelosi calls “crumbs” so far has amounted to a $30 billion income boost for millions of Americans.