U.S. President Donald Trump reacts as he sits on a truck while he welcomes truckers and CEOs to attend a meeting regarding healthcare at the White House in Washington, U.S., March 23, 2017. Carlos Barria/Reuters Heidi Shierholz, former chief economist at the Labor Department, has a great saying when it comes to an alleged "skills gap" in the job market: "If you hear an employer complain they can’t find skilled workers, always ask, at what wage?"

The Business CEO Roundtable has published a report discussing what it says is a shortage of skilled workers in America, and hosted a conference in Washington featuring high profile CEOs, a top aide to Donald Trump and two US senators.

"There are a lot of jobs open," said Jamie Dimon, CEO of JP Morgan, during a panel discussion sponsored by the pro-industry lobby. The problem is that "there are a lot of people who are not properly trained," he maintained.

But is there really a skills shortage? If so, why have median wages been stuck in a rut for so long? Why aren’t companies investing more in training and labor-saving equipment? Why aren’t they asking workers to work longer hours? It doesn’t add up, says Dean Baker, co-director of the Center for Economic and Policy Research, a liberal think tank in Washington.

"We want better educated people but that’s not the thing holding back the labor market right now," Baker told Business Insider. "It’s an incredible cop out."

The Business CEO Roundtable event was held as a preview of Trump’s "workforce development week" in which he vowed to focused on labor market issues despite sharp proposed budget cuts to training programs.

"Apprenticeships place students into great jobs without the crippling debt of a four-year college degree," Trump said on June 15 before signing an executive order on apprenticeships.

The Federal Reserve’s monthly Beige Book, a report based on conversations between regional Fed officials and businessmen in their districts, tends to perpetuate the notion of a skills gap by unquestioningly regurgitating the complaints of executives.

"Labor markets continued to tighten, with most districts citing shortages across a broadening range of occupations and regions," said the latest edition, published May 31.

Michael Madowitz, an economist at the Center for American Progress, says he is "unusually unsympathetic to the evergreen skills gap critique."

"First the Econ 101 ‘pay more for more if you want more’ cuts against this well in a period of little wage growth," Madowitz said. "Second, there’s fascinating/depressing empirical research showing a 'skills gap' occurs because employers add and remove qualifications for the same job postings depending on the labor market, ensuring there is always a skills gap."