The congressional statement is right.  Unfortunately so is Trump (which pains me to say since I disagree with almost every other thing he's said and done as president).  The era of strategic patience is over.  Kim Jong-un, a dictator whose ruthlessness extends to killing his own family members to secure absolute personal power, cannot be allowed to possess a viable long range nuclear strike capability.  The potential consequences would be catastrophic.  Better to fight a conventional war now than suffer nuclear holocaust later.