The signatures of late US President Ronald Reagan (top left) and late Soviet leader Mikhail Gorbachev (top right) are seen on a guest book at the Hofdi House prior to the arrival of US Secretary of State Marco Rubio, as part of a European visit, in Reykjavik on October 6, 2026. US Secretary of State Marco Rubio starts in Iceland a three-nation European tour to push for greater US influence in the Arctic after Washington sealed a pact on Greenland. After Iceland, Rubio continues to Athens to participate in a "strategic dialogue" with NATO member Greece on regional and energy security before heading to Portugal. (Photo by Mark Schiefelbein / POOL / AFP via Getty Images)

TOPSHOT - US President Donald Trump is reflected in the sunglasses of White House chief of staff Susie Wiles as he speaks to the press before boarding Marine One as he departs from the South Lawn of the White House in Washington, DC, on October 5, 2026. Trump is travelling to Nebraska to speak at a campaign rally. (Photo by Brendan SMIALOWSKI / AFP via Getty Images)

WASHINGTON, DC - OCTOBER 05: U.S. President Donald Trump speaks to reporters before boarding Marine One on the South Lawn of the White House on October 05, 2026 in Washington, DC. Trump is traveling to Nebraska for a midterm campaign rally. (Photo by Anna Moneymaker/Getty Images) ***BESTPIX***

GRAND ISLAND, NEBRASKA - OCTOBER 05: U.S. President Donald Trump arrives at Central Nebraska Regional Airport during a trip to campaign for Nebraskan Republican candidates on October 05, 2026 in Grand, Island, Nebraska. Trump is campaigning for incumbent U.S. Sen. Pete Ricketts (R-NE) and Gov. Jim Pillen ahead of the November midterm elections. (Photo by Win McNamee/Getty Images) ***BESTPIX***

WASHINGTON, DC - OCTOBER 05: Marine One with U.S. President Donald Trump aboard prepares to land on the South Lawn of the White House on October 05, 2026 in Washington, DC. Trump was campaigning for incumbent U.S. Sen. Pete Ricketts (R-NE) and Gov. Jim Pillen ahead of the November midterm elections. (Photo by Tasos Katopodis/Getty Images)

WASHINGTON, DC - OCTOBER 05: Natalie Harp, aide to U.S. President Donald Trump is seen in Marine One as it prepares to land on the South Lawn of the White House on October 05, 2026 in Washington, DC. Trump was campaigning for incumbent U.S. Sen. Pete Ricketts (R-NE) and Gov. Jim Pillen ahead of the November midterm elections. (Photo by Tasos Katopodis/Getty Images)

WASHINGTON, DC - OCTOBER 05: U.S. President Donald Trump prepares to step off Marine One on the South Lawn of the White House on October 05, 2026 in Washington, DC. Trump was campaigning for incumbent U.S. Sen. Pete Ricketts (R-NE) and Gov. Jim Pillen ahead of the November midterm elections. (Photo by Tasos Katopodis/Getty Images)

WASHINGTON, DC - OCTOBER 05: Marine One with U.S. President Donald Trump aboard prepares to land on the South Lawn of the White House on October 05, 2026 in Washington, DC. Trump was campaigning for incumbent U.S. Sen. Pete Ricketts (R-NE) and Gov. Jim Pillen ahead of the November midterm elections. (Photo by Tasos Katopodis/Getty Images)