When President Trump was criticized by some of the artists who were recognized at the annual Kennedy Center Honors program during his first term, he responded by boycotting the show, breaking with decades of precedent.Now, as he leads a sweeping takeover of the Kennedy Center in his second term, Mr. Trump is seeking changes that will allow him greater sway in the selection of honorees, according to two people briefed on the matter who were granted anonymity to describe confidential discussions.Mr. Trump, who is now the chairman of the...