An Impeachment procedure against a federal government official can only be made by the House of Representatives and so it was with Clinton,
Andrew Johnson
President Gerald Ford had two attempts made on his life, he escaped both times.
There were no recorded assassination attempts made against President Van Buren.
The record for the most assassination attempts made on a single person is held by Fidel Castro, the former leader of Cuba. It is estimated that there were over 600 attempts on his life.
He made 36 attempts, against Toronto on 3/20/2005.
The formal term used when an attempt is made to remove a president of the United States is "impeachment." Impeachment is the process by which a sitting president can be charged with "high crimes and misdemeanors" by the House of Representatives. If a president is impeached by the House, the Senate conducts a trial to determine whether the president should be removed from office.
He resigned before they could take him to court.
In the U.S. Constitution, impeachment is like being accused; impeachment is the job of the House of Representatives. Once the person has been impeached - accused of a crime - then the case goes to trial. The House carries out the trial, and the Senate acts as the jury. Impeachment is very rare; only a few judges have ever been removed from office, and while two Presidents have been impeached, neither was removed from office. Removal from office is the ONLY penalty that the Senate can impose. If removed from office through impeachment, the person can never again hold any office of ANY kind for the government of the United States.
The Ohio State Buckeyes made 14 straight 3 pointers collectively as a team against Wisconsin on 3\6/11. They hit 14 of 15 attempts which is also the highest % of 3 pointers made in NCAA history(min 10 attempts)
Successful assassinations were made of:Abraham LincolnJames GarfieldWilliam McKinleyJohn KennedyUnsuccessful attempts were made on:Andrew JacksonAbraham Lincoln (while President-elect)Theodore Roosevelt (after leaving office)Franklin Roosevelt (while President-elect; some believe he was not actually the target)Harry TrumanJohn Kennedy (while President-elect)Richard NixonGerald Ford (two attempts)Jimmy CarterRonald ReaganGeorge H. W. Bush (after leaving office)Bill ClintonGeorge W. Bush (several attempts)Batack Obama (several planned attempts)
As per other internet sources there is no limit on number of attempts and age.