The Facts

• Biden also said he has the Secret Service to review all security measures ahead of the Republican National Convention, which begins in Milwaukee on Monday, adding that the investigation is underway to find a motive for the assassination attempt.After Donald Trump survived an assassination attempt at a Pennsylvania rally on Saturday, Pres. Joe Biden has "directed an independent review of the national security" to probe how a shooter could manage to evade the US Secret Service and get onto the closest roof to a presidential nominee.