During the 2016 Republican primary race to be the nominee of the Republican Party for president in the general election for president of the United States, Donald Trump was accused by his opponents of having hired temporary construction workers from Poland instead of American workers during construction of Trump properties. Suppose the direct labour rate variance for the construction project was favourable, and the direct labour efficiency variance was also favourable. Trump was accused of underpaying and overworking the temporary workers. U.S. law stipulated that foreign workers could not change employers once having come to work in the country.

Required:

Explain what Donald Trump’s opponents would infer based on the two variances in developing their attacks on his candidacy for the nomination.