Obama heads to San Antonio, Austin for fundraisers Houston Chronicle Copyright 2012 Houston Chronicle. All rights reserved. This material may not be published, broadcast, rewritten or redistributed. Published 07:55 p.m., Monday, July 16, 2012 Obama is scheduled to address South Texas campaign donors about 1 p.m. at the Henry B. Gonzalez Convention Center and join a small gathering of big-dollar backers at the Dominion home of attorney Mikal Watts. The campaigning comes in a week when presumptive GOP nominee Mitt Romney is fighting back against Obama's criticisms of his business dealings and while Obama is trying to bolster his war chest for the fall campaign. Obama supporters estimate a turnout of about 1,000 at the convention center event and predict a local record for Democratic presidential campaign fundraising.