Depending on how long your are here, but you could likely get a roaming package through AT&T. I am with TELUS here and for a 16 day trip down to the US last year I paid $40 for each of our phones for a data package that expires after 30 days. It includes 50 minutes of calling, 50 texts and 25MB of data. All incoming calls are free. Additional minutes and time is way cheaper than without the package too. We used our phones at least as often as usual, with even more data usage, and stayed within the package coverage.
This has worked good for us. TELUS has lots of other travel options too. I know some people just pick up a SIM card for the area for their phones, though not sure how this works.
2017 Escape 5.0 TA (someday soon, I hope
2015 Ford F150 Lariat 3.5L EcoBoost
2009 Escape 19 (previous)
“Most folks are about as happy as they make up their minds to be.” — Abraham Lincoln