Washington made two concerted attempts to re-enslave Ona. First, while still in office, he sent a letter through Secretary of the Treasury Oliver Wolcott, Jr. to Joseph Whipple, Portsmouth’s collector of customs.
Why did Washington try so hard to capture Ona again? Couldn't he have just bought another one? Does he feel like his precious material object has run away and in order to ensure the safety of his product (and possibly the products of everyone else) then he would feel accomplished? What I am trying to say here is, if the president can't get his slave back then who can? People might see this and think slavery is a dangerous investment. Which could explain Washingtons response to getting Ona back.