Under political pressure , South Vietnamese President Nguyễn Văn Thiệu resigned Change_of_leadership on 21 April , in hopes that a new leader that was more amenable to the North Vietnamese could reopen Process_start negotiations Communication with them .

And I hereby proclaim Statement and declare Expressing_publicly that if any person , under the pretended authority of the said States , or under any other pretense , shall molest a vessel of the United States , or the persons or cargo on board of her , such person will be held Defending amenable to the laws of the United States for the prevention and punishment of piracy .