On April 12 , during an interview with Mark Levin , Rubio expressed his wishes that Republicans would nominate a conservative candidate , name-dropping Cruz . This was interpreted as an endorsement of Cruz , though Rubio clarified the following day that he had only been answering a question . Rubio would later explain his decision to not endorse Cruz being due to his belief that the endorsement would not significantly benefit him and a desire to let the election cycle play out . On April 22 , Rubio said he was not interested in being the vice presidential candidate to any of the remaining GOP contenders . On May 16 , Rubio posted several tweets in which he critiqued sources reporting that he despised the Senate and a '' Washington Post '' story that claimed he was unsure of his next move after his unsuccessful presidential bid , typing , " I have only said like 10000 times I will be a private citizen in January . " On May 18 , after Trump expressed a willingness to meet with Kim Jong-un , Rubio said Kim was " not a stable person " and furthered that Trump was only open to the meeting due to inexperience with the North Korea leader . On May 26 , Rubio told reporters that he was backing Trump due to his view that the presumptive nominee was a better choice than Hillary Clinton for the presidency and that as president , Trump would sign a repeal of the Affordable Care Act and replace the late Antonin Scalia with another conservative Supreme Court Justice . He also confirmed that he would be attending the 2016 Republican National Convention in Cleveland , Ohio , where he intended to release his pledged delegates to support Trump . On May 29 , Rubio continued disavowing vice presidential speculation but indicated an interest in playing a role in Trump 's campaign . On June 6 , Rubio rebuked Trump 's comments on Gonzalo P. Curiel , who Trump accused of being biased against him on the basis of his ethnicity , as " offensive " while speaking with reporters , advising that Trump should cease defending the remarks and defending the judge as " an American . " On July 6 , Olivia Perez-Cubas , Rubio 's Senate campaign spokeswoman , said he would not be attending the Republican National Convention due to planned campaigning on the days the convention was scheduled to take place
2016 Republican National Convention
2016 Republican National Convention
Marco Rubio