in commonwealth vs. hana , 81 n. e. 149 ( massachusetts , 1907 ) , a statute on the licensing of hawkers and peddlers , which provided that no one can obtain a license unless he is , or has declared his intention , to become a citizen of the united states , was held valid , for the following reason : it may seem wise to the legislature to limit the business of those who are supposed to have regard for the welfare , good order and happiness of the community , and the court can not question this judgment and conclusion .