There are different opinions of many historians about Wilson's action during his tenure. In my opinion, US President Woodrow Wilson wanted to maintain US neutrality because the war will not favour of U.S economy. There is no clash of United States of America with Germany so the U.S has to stay away from the war. But when the German aggression is its peek, the U.S joined the war against Germany to stop its aggression. President Wilson do the right decision by first keeping the U.S away from the war and when it is needed join the war for the sake of peace.
