The U.S. labor market heated up in December, adding more jobs than expected and stoking optimism that higher interest rates and slower growth abroad won’t stop the steady march of economic growth and wage gains for American workers. With low unemployment, rising incomes and inflation down to a third of its peak in 2022, it raises the question of just how good an economy President-elect Donald Trump stands to inherit when he enters office in less than two weeks. “President Trump is inheriting an economy that is about as good as it ever gets,” Mark Zandi, chief economist at Moody’s...