The Turkish lira has been in a steady slide and reached an all-time low earlier this week.
Turkey's president has said his country will stand strong against an "attempted economic coup" amid heightened tensions with the US.
"We did not and will not surrender to those who act like a strategic partner but make us a strategic target", Erdogan said, in a reference to the United States.
The United States sanctioned Justice Minister Abdulhamit Gul and Interior Minister Suleyman Soylu, blaming both for being involved Brunson's arrest and detention.
Last Wednesday, in a tit-for-tat move, Ankara increased tariffs on several US-origin products including alcohol, tobacco products and cars.
Turkey is struggling to stabilize its currency after it plunged to a record low in a crisis that spurred fears of bankruptcies and a spillover effect in other emerging markets if Turkish firms can't pay back high foreign debt.
Recep Tayyip Erdogan on Saturday told thousands of supporters in Ankara that the country was being "threatened by the economy, sanctions, foreign currency, interest rates and inflation". Erdogan has cast the tariffs, and the lira's sell-off, as an "economic war" against Turkey. The feud over Brunson, who was detained in October 2016, has added to the jitters over an economy that grew quickly, with the help of heavy borrowing, in past years.
"They have invested a lot of pressure into the release of Brunson, given the importance of the midterm elections in the US. Would the amount of Turkey's debts decrease?"
Wall St flat as trade tensions mute earnings optimism
S&P 500 e-minis (ESc1) were up 1.25 points, or 0.04 percent and Nasdaq 100 e-minis (NQc1) were up 3.25 points, or 0.04 percent. Declining issues outnumbered advancing ones on the NYSE by a 1.04-to-1 ratio; on Nasdaq, a 1.10-to-1 ratio favoured advancers.
The lira has weakened 35 per cent against the dollar this year as the deterioration in ties between the North Atlantic Treaty Organisation allies fuelled losses driven by concerns over President Tayyip Erdogan's influence over monetary policy. Earlier this week a Turkish court denied his appeal for release.
Turkey has been pushing back against United States pressure, insisting that it will determine its own economic policies and choose its own trade partners. Trump tweeted on Thursday.
"Turkey - they have not proven to be a good friend, they have a great Christian pastor there, a very good man", he said.
According to the Middle East Eye, officials in Ankara are willing to concede to U.S. demands for the freedom of Andrew Brunson, an evangelical preacher accused of playing a role in the attempted coup there in 2016.
"A one-dollar American bill was found in Dr. Golge's possession when arrested".
American officials have also protested the detentions of several Turkish employees of the US diplomatic mission in Turkey, including Metin Topuz, Hamza Ulucay and Mete Canturk.
Turkey has repeatedly criticized the US for not condemning the coup attempt two years ago. It says the case against Atilla, sentenced to 32 months in prison, was politically motivated.
The White House stance appeared to give Turkish authorities little incentive to work for the release of Andrew Brunson, a pastor on trial in Turkey on terrorism charges and whose case Turkish officials have said was a matter for the courts.
Torchia reported from Istanbul.