George Washington
At the end of his second term, Washington retired for personal and political reasons, fatigued and disgusted with personal attacks, and to assure a truly contested presidential election could be held. He did not feel bound to a two-term limit, but his retirement ultimately set precedent. The two-term limit to the presidency was formalized with the 1951 adoption of the Twenty-second Amendment to the United States Constitution. Washington is often credited with setting the principal of a two-term presidency, but it was Thomas Jefferson who first refused to run for a third term on political grounds.
President of Colombia
Already the Constitution of 1991 limited presidents to a single term. However, on 24 November 2005, the Colombian Congress introduced the Electoral Guarantees Law (Ley de Garantias Electorales), which modified Article 152, of the Colombian Constitution of 1991 and allowed a president to run for a second term. The President or Vice President running for re-election must officially tell in the National Electoral Council and guarantee a fair competition for the other contenders. Participation of acting officials in political proselytism was standardized. If the president or vice president are not running for office, they are prohibited from participating on political proselytism. If one or both are participating, they can engage in political activity only four months before the primary elections. Also, if the president and/or vice president is running for office, he may participate in their political party's selection mechanism to postulate candidates. In 2010, the Constitutional Court of Colombia threw out a planned referendum to allow presidents to run for three consecutive terms. It ruled that Colombian presidents can only serve two terms, even if they are nonconsecutive. In 2015, a constitutional amendment repealed the 2004 changes and reverted to the original one-term limit.