Naima Coster, Dr. Sonia Lewis

Severe storms from Midwest to East Coast; The Trump administration is imposing a 50% tariff on about $20 billion worth of Canadian goods as Canada is vowing to retaliate; ABC News' Lama Hasan is in London with the latest on Harry and Meghan's decision to leave California and move back to the U.K; What to know about the melanoma mRNA vaccine trial; Social media's favorite giant lily pad weigh-off; Nearly 7 million student loan borrowers are impacted by the termination of the SAVE program. ABC News' Andrew Dymburt reports on the latest, plus tips to keep payments from soaring; and more on ABC's Good Morning America. "GMA" August Book Club pick author Naima Coster ("Take What You Can"); Student Loan Payoff Strategies with Dr. Sonia Lewis; ABC Secret Savings; Deals & Steals with ABC e-commerce editor Tory Johnson.