Why did people in the united states think the country needed the neutrality acts?

The neutrality acts were created because of the isolationist and anti-interventionist views and were created in the 1930s in hopes to keep the US out of foreign entanglement. Ultimately, it kept the US from aiding Britain, France, and Germany. The 1935 act stated that the US couldn't trade arms or materials for war with another nation who was involved in war at the current time. The 1936 act stated the US couldn't make loans to belligerent nations. The act of 1937 stated that US citizens were forbidden from traveling on belligerent ships, and American ships were prevented from transporting arms to belligerents. The act gave the president the authority to ban belligerent ships from US waters. The 1937 act also created the "cash-and-carry" clause that said we could deliver materials (non-arms/war materials) for immediate pay and on non-american ships.