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Dallas Mayor Mike Rawlings applauds as he walks with Republican National Committee site selection committee chairwoman Enid Mickelson, center, and Senator Kay Bailey Hutchison as they arrive for a visit at the American Airlines Center, on Thursday, June 12, 2014. (Louis DeLuca/Dallas Morning News) ( NM_12RNCl )

(From left) Phillip Jones, President and CEO of the Dallas Convention & Visitors Bureau, Ray Washburne, RNC Finance Chairman, Dallas Mayor Mike Rawlings, Enid Mickelsen, RNC site committee chairwoman and former U.S. Senator Kay Bailey Hutchison, wave to the crowd at American Airlines Center, Thursday, June 12, 2014. (Louis DeLuca/Staff Photographer) ( NM_12RNCDallas1 )

Supporters cheer as the Republican National Committee site selection committee arrives along a red carpet laid through the plaza outside the American Airlines Center, as they are courted by the city for the 2016 national convention, on Thursday, June 12, 2014. (Louis DeLuca/Dallas Morning News) ( NM_12RNCk )

Linda Herren, Republican National Committeewoman from Georgia, holds an elephant's trunk in front of the American Airlines Center during a visit by members of the Republican National Committee scouting a 2016 Convention host site in Dallas, Thursday, June 12, 2014. American Airlines Center would serve as the convention site if Dallas' bid is successful. Dallas is competing with Denver, Cleveland and Kansas City. (AP Photo/LM Otero) ( Republican Convention Dallas )

Dallas welcomed the Republican National Convention host committee at American Airlines Center, Thursday, June 12, 2014. (Louis DeLuca/Staff Photographer) ( NM_12RNCDallas3 )

Republican supporters cheer outside the American Airlines Center during a visit by members of the Republican National Committee scouting a 2016 Convention host site in Dallas, Thursday, June 12, 2014. American Airlines Center would serve as the convention site if Dallas' bid is successful. Dallas is competing with Denver, Cleveland and Kansas City. (AP Photo/LM Otero) ( Republican Convention Dallas )

Posing with live elephants, Republican National Committee chairman Reince Priebus, center right, waves with, from left, Phillip Jones, Ray Washburne, Dallas Mayor Mike Rawlings, Enid Mickelsen and former U.S. Sen. Kay Bailey Hutchison in front of the American Airlines Center during a visit by members of the Republican National Committee scouting a 2016 Convention host site in Dallas, Thursday, June 12, 2014. American Airlines Center would serve as the convention site if Dallas' bid is successful. Dallas is competing with Denver, Cleveland and Kansas City. (AP Photo/LM Otero) ( Republican Convention Dallas )

Kilgore Rangerette Chelsea Crawford makes a selfie photo with an elephant in front of the American Airlines Center before a visit by members of the Republican National Committee scouting a 2016 Convention host site in Dallas, Thursday, June 12, 2014. American Airlines Center would serve as the convention site if Dallas' bid is successful. Dallas is competing with Denver, Cleveland and Kansas City. (AP Photo/LM Otero) ( Republican Convention Dallas )

Republican supporters cheer the arrival of the Republican National Committee site selection committee as they visit the American Airlines Center, as they are courted by the city for the 2016 national convention, on Thursday, June 12, 2014. (Louis DeLuca/Dallas Morning News) ( NM_12RNCi )

Michael Vallante, right, and Sara Armstrong of the Republican National Committee site selection committee get an inquisitive but friendly greeting from Suzy the elephant as they arrive at the American Airlines Center, where they are courted by the city for the 2016 Republican National Convention, on Thursday, June 12, 2014. (Louis DeLuca/Dallas Morning News) ( NM_12RNCa )

Republican supporters take photographs on the plaza outside the American Airlines Center, as the Republican National Committee site selection committee visits the arena on Thursday, June 12, 2014. (Louis DeLuca/Dallas Morning News) ( NM_12RNCg )

Republican National Committee site selection committee chairwoman Enid Mickelson, enjoys a moment with one of the elephants at the festivities outside the American Airlines Center, as the city of Dallas entertains the committee in hopes of getting the 2016 Republican National Convention, photographed on Thursday, June 12, 2014. (Louis DeLuca/Dallas Morning News) ( NM_12RNCd )

Dallas welcomed the Republican National Convention host committee at American Airlines Center, Thursday, June 12, 2014. (Louis DeLuca/Staff Photographer) ( NM_12RNCDallas2 )

An early morning drizzle doesn't dampen the the excitement outside the American Airlines Center, as supporters wait for the Republican National Committee site selection committee to arrive at the arena, on Thursday, June 12, 2014. (Louis DeLuca/Dallas Morning News) ( NM_12RNCh )

The Republican National Committee site selection committee arrives along a red carpet laid through the plaza outside the American Airlines Center, as they are courted by the city for the 2016 national convention, on Thursday, June 12, 2014. (Louis DeLuca/Dallas Morning News) ( NM_12RNCj )

Republican National Committee chairman Reince Priebus talks during a press conference at the American Airlines Center, as they are courted by the city for the 2016 national convention, on Thursday, June 12, 2014. (Louis DeLuca/Dallas Morning News) ( NM_12RNCr )

The Republican National Committee site selection committee arrives along a red carpet laid through the plaza outside the American Airlines Center, as they are courted by the city for the 2016 national convention, on Thursday, June 12, 2014. (Louis DeLuca/Dallas Morning News) ( NM_12RNCm )

A balloon drop concludes a video presentation during the Republican National Committee site selection committee visit to the American Airlines Center, as the city of Dallas vies for the 2016 Republican National Convention, on Thursday, June 12, 2014. (Louis DeLuca/Dallas Morning News) ( NM_12RNCp )

Dallas Mayor Mike Rawlings, RNC chairman Reince Priebus and Senator Kay Bailey Hutchison are pictured during a press conference at the American Airlines Center, as they are courted by the city for the 2016 national convention, on Thursday, June 12, 2014. (Louis DeLuca/Dallas Morning News) ( NM_12RNCt )

A group of Kilgore Rangerettes gets a group photo taken after a balloon drop concludes a video presentation during the Republican National Committee site selection committee visit to the American Airlines Center, as the city of Dallas vies for the 2016 Republican National Convention, on Thursday, June 12, 2014. (Louis DeLuca/Dallas Morning News) ( NM_12RNCq )