CLEVELAND, OH - JULY 20: Governor Mike Pence, his wife Karen and family members join the Trump family as they attend a welcome arrival event for Donald Trump at the Great Lakes Science Centre on July 20, 2016 in Cleveland Ohio. Republican presidential candidate Donald Trump received the number of votes needed to secure the party's nomination. An estimated 50,000 people are expected in Cleveland, including hundreds of protesters and members of the media. The four-day Republican National Convention kicked off on July 18. (Photo by Jeff J Mitchell/Getty Images)

CLEVELAND, OH - JULY 20: Governor Mike Pence, his wife Karen and family join members of the Trump family as they attend a welcome arrival event for Donald Trump at the Great Lakes Science Centre on July 20, 2016 in Cleveland Ohio. Republican presidential candidate Donald Trump received the number of votes needed to secure the party's nomination. An estimated 50,000 people are expected in Cleveland, including hundreds of protesters and members of the media. The four-day Republican National Convention kicked off on July 18. (Photo by Jeff J Mitchell/Getty Images)

CLEVELAND, OH - JULY 20: Governor Mike Pence and his family join members of the Trump family as they attend a welcome arrival event for Donald Trump at the Great Lakes Science Centre on July 20, 2016 in Cleveland Ohio. Republican presidential candidate Donald Trump received the number of votes needed to secure the party's nomination. An estimated 50,000 people are expected in Cleveland, including hundreds of protesters and members of the media. The four-day Republican National Convention kicked off on July 18. (Photo by Jeff J Mitchell/Getty Images)

CLEVELAND, OH - JULY 20: Invited guests attend an arrival event for Donald Trump at the Great Lakes Science Centre on July 20, 2016 in Cleveland, Ohio. Republican presidential candidate Donald Trump received the number of votes needed to secure the party's nomination. An estimated 50,000 people are expected in Cleveland, including hundreds of protesters and members of the media. The four-day Republican National Convention kicked off on July 18. (Photo by Jeff J Mitchell/Getty Images)

CLEVELAND, OH - JULY 20: Governor Mike Pence and his family join members of the Trump family as they attend a welcome arrival event for Donald Trump at the Great Lakes Science Centre on July 20, 2016 in Cleveland Ohio. Republican presidential candidate Donald Trump received the number of votes needed to secure the party's nomination. An estimated 50,000 people are expected in Cleveland, including hundreds of protesters and members of the media. The four-day Republican National Convention kicked off on July 18. (Photo by Jeff J Mitchell/Getty Images)

CLEVELAND, OH - JULY 20: Governor Mike Pence, his wife Karen and family join members of the Trump family as they attend a welcome arrival event for Donald Trump at the Great Lakes Science Centre on July 20, 2016 in Cleveland Ohio. Republican presidential candidate Donald Trump received the number of votes needed to secure the party's nomination. An estimated 50,000 people are expected in Cleveland, including hundreds of protesters and members of the media. The four-day Republican National Convention kicked off on July 18. (Photo by Jeff J Mitchell/Getty Images)

CLEVELAND, OH - JULY 20: Governor Mike Pence and his family join members of the Trump family as they attend a welcome arrival event for Donald Trump at the Great Lakes Science Centre on July 20, 2016 in Cleveland Ohio. Republican presidential candidate Donald Trump received the number of votes needed to secure the party's nomination. An estimated 50,000 people are expected in Cleveland, including hundreds of protesters and members of the media. The four-day Republican National Convention kicked off on July 18. (Photo by Jeff J Mitchell/Getty Images)

CLEVELAND, OH - JULY 20: Tiffany Trump and Ivanka Trump join Governor Mike Pence and his family as they attend a welcome arrival event for Donald Trump at the Great Lakes Science Centre on July 20, 2016 in Cleveland Ohio. Republican presidential candidate Donald Trump received the number of votes needed to secure the party's nomination. An estimated 50,000 people are expected in Cleveland, including hundreds of protesters and members of the media. The four-day Republican National Convention kicked off on July 18. (Photo by Jeff J Mitchell/Getty Images)