2016 was the biggest year on record for deals being blocked by regulators. Don't expect that to happen again, especially during a Trump presidency, says Frank Aquila, partner at Sullivan & Cromwell. Aquila said Trump's campaign declaration decrying a potential AT&T (T - Get Report) / Time Warner (TWX) tie-up does not mean he is against megadeals, and his push to put "America first" will not throw cold water on cross-border deals.