Threats to members of Congress are on the rise, security officials told senators at an emergency briefing in the wake of the killing of a Minnesota state lawmaker in her home over the weekend.

The chief of staff for Minnesota Senator Tina Smith blasted Senator Mike Lee in a candid email he sent to Senator Lee’s office after Lee posted several tweets that appeared to blame the

Senators Amy Klobuchar and Tina Smith honored the late former Democratic House Speaker Melissa Hortman and her husband, Mark, on the Senate Floor on Tuesday, June 17.

Minnesota Democratic Senator Tina Smith joins NBC News' Tom Llamas to discuss the politically-motivated murders in Minnesota. Smith shared that she had seen Rep. Melissa Hortman and her husband Mark the night before their deaths.

Tina Smith woke up Saturday to a barrage of text messages. The U.S. senator spent the evening before catching up with fellow Democratic leaders at the party’s annual fundraising dinner, including longtime DFL legislative leader Melissa Hortman and her husband,

Authorities revealed that the suspect behind the assassination of Representative Melissa Hortman left behind a disturbing “manifesto” and a list of potential future targets, which included several high-profile Minnesota Democrats,

Sen. Andy Kim (D-N.J.) is backing Rep. Angie Craig (D-Minn.) in the Democratic primary to replace retiring Sen. Tina Smith (D-Minn.), making Kim the latest Democratic senator to back the congresswoman.

U.S. House committee approved removing language on mineral leases in northeastern Minnesota; Senate likely to follow.