Investopedia tells me that a weaker currency will reduce sovereign debt burdens. It is quoted as saying 'a weaker currency makes [these] payments effectively less expensive over time.' However, I cannot get my head around this.
Say the US owes the UK £100 and the exchange rate is $1 = £2 (not accurate, I know)
This means that the US will have to use $50 to pay off their debt
Now say the exchange rate weakens to $1 = £1
Then the US will have to use $100 to pay off this debt
Could someone please explain this to me, I am clearly missing something obvious?
Here is the link to the Investopedia article: https://www.investopedia.com/articles/investing/090215/3-reasons-why-countries-devalue-their-currency.asp#devaluing-currency