It’s one of the biggest banks that many wealthy Americans, or soon-to-be-wealthy ones, have never heard of. That could change soon for Royal Bank of Canada.  Following its hire of a $1 billion advisor team from First Republic last week, the U.S. arm of the bank’s RBC Wealth Management unit is ready to pitch itself to advisors and clients as a stable, Canada-nice and highly competitive place to work with.  “We see that both financial advisors and clients are more concerned than ever before, about the safety and security of assets,” Tom Sagissor, the president of RBC Wealth Management in the U.S., said in an interview. “When you look at…