Following the six-month US suspension of the INF Treaty, the Trump administration formally announced it had withdrawn from the treaty on 2 August 2019. On that day, Pompeo stated that "Russia is solely responsible for the treaty's demise". While formally ratifying a treaty requires the support of two-thirds of the members of the US Senate, because Congress has rarely acted to stop such actions a number of presidential decisions during the 20th and 21st centuries have established a precedent that the president and executive branch can unilaterally withdraw from a treaty without congressional approval.