Clinton met with Sung Y. Kim earlier in the day

https:// www.cnn.com/2011/10/13/politics/korea-state-visit/index.html

While Obama spoke of the strong bonds, President Lee Myung-bak said he will win over American critics of the pact, which was approved by Congress Wednesday. Obama praised the Senate's confirmation Thursday of Sung Y. Kim as the first Korean-American ambassador to South Korea.

https:// en.wikipedia.org/wiki/Sung_Kim

On June 24, 2011, President Obama nominated Kim to be the U.S. Ambassador to the Republic of Korea. However, Kim's nomination stalled after U.S. Sen. Jon Kyl placed a hold on Kim's nomination over concerns not with Kim but with U.S. policy toward North Korea. On October 13, 2011 Kyl lifted his hold on Kim's nomination and the Senate confirmed Kim by unanimous consent.

https:// foreignpolicy.com/2011/10/13/u-s-ambassador-to-south-korea-finally-confirmed/

There were various accounts of what exactly Kyl wanted from the administration in exchange for lifting the hold on Kim. Some administration officials said Kyl was requesting a series of letters that defined the administration’s engagement with North Korea and made pledges to limit that engagement.

https:// en.wikipedia.org/wiki/Jon_Kyl

In November 2010, Kyl announced that he would oppose the New START arms control treaty's ratification in the lame duck session. He was unsuccessful in this regard, as the treaty passed 71-26, clearing the constitutionally mandated two-thirds threshold by the narrowest margin of any nuclear arms control treaty ever ratified by the United States

https:// en.wikipedia.org/wiki/New_START

According to a Reuters report on February 9, 2017, in US President Donald Trump's first 60-minute telephone call with Russian President Vladimir Putin, Putin inquired about extending New START. President Trump attacked the treaty, claiming that it favored Russia and was "one of several bad deals negotiated by the Obama administration"