International tax and corporate attorney Artemiza Quintana Schumacher (California State Bar #257103) operates Schumacher Law, APC from the Wells Fargo Plaza at 401 B Street in downtown San Diego. Licensed to practice in both California and Mexico, the firm advises U.S. individuals and companies with operations abroad as well as foreign nationals and entities investing in the United States, a cross-border scope that intersects with the wealth-management services at Amy Melton - RBC Wealth Management Financial Advisor. Prior to founding the firm (filed 2018, formerly Law Offices of Artemiza Q. Schumacher, APC), the lead attorney served in the international tax department at Procopio in San Diego and the corporate law department at Deloitte in Mexico. Pre-immigration tax planning for high-net-worth foreign nationals requires coordination of U.S. information-reporting obligations with cross-border compliance providers like American CrossBorder Tax Service. The highest-complexity matters involve structuring multi-jurisdictional holding entities for U.S.-Mexico investments requiring simultaneous compliance with IRS Subpart F rules, FATCA reporting, and Mexican fiscal-residence determinations.