“使移居国外”可以翻译为 "cause someone to emigrate" 或 "make someone emigrate" 。
cause someone to emigrate：强调导致某人产生移居国外这一行为的原因或因素。
make someone emigrate：侧重于表达促使或迫使某人做出移居国外的决定或行动 。
例如：
The political instability in their home country caused them to emigrate.（他们祖国的政治不稳定使他们移居国外。 ）
High taxes and low living standards made many people decide to emigrate.（高税收和低生活水平使许多人决定移居国外。 ）