Brenden Greeley’s “The economy is king in Donald Trump’s re-election bid” (Opinion, December 20) accurately and optimistically concludes that our US economy will “get [another] massive wave of hiring around mid-year”. But in his earlier, also accurate assessment that “working age adults continue to join the workforce” he misses another, equally powerful piece of the puzzle: for employers and policymakers in any growth economy to take the necessary 21st-century step of opening jobs to those of us over the quaint 20th-century retirement age of 60 or so.