Coronavirus: In letter to Trump, Turkey's Erdogan urges better US understanding
Mr Erdogan's letter arrived on Tuesday (April 28) with a delivery of Turkish medical gear, including protective suits and masks, to help the Nato ally contain its Covid-19 outbreak. The palace's office in Ankara released the letter on Wednesday.
The US Congress has threatened to impose sanctions on Turkey over its purchase of S-400 defence systems from Russia, but the pandemic has delayed the plan to activate the systems as Ankara focuses on battling the disease at home.
"I hope that in the upcoming period, with the spirit of solidarity we have displayed during the pandemic, Congress and the US media will better understand the strategic importance of our relations," the Turkish President said in the letter.
He said he hoped that they acted "in a way that our common fight against our common problems necessitates."
Turkish-US relations have also been soured in recent years by disagreements over Syria, notably US support for a Kurdish militia there, and the US conviction of a Turkish bank executive.
Earlier this month, Turkish officials said Turkey has held talks with the United States about possibly securing a swap line from the US Federal Reserve and has discussed other funding options to mitigate the pandemic's economic fallout.
The Fed has ramped up swaps lines - in which it accepts other currencies in exchange for dollars - to central banks in several countries to backstop financial markets amid the crisis, but Turkey has not been among the recipients.