Susan and Michael Pretti say they have been ‘ignored and misled’ in quest for justice over son’s killing by US agents

The parents of Alex Pretti, the 37-year-old nurse killed by federal immigration agents in Minneapolis earlier this year, accused federal officials of stonewalling them and shielding their son’s killers.

During a press conference on Tuesday, Michael and Susan Pretti made their first public remarks since their son’s death in January, calling for the Department of Justice to hold those involved in their son’s death accountable. The federal government has not provided them with meaningful information about the case, they said.

Frustration with a sprawling fraud scandal has cut Peggy Flanagan’s poll lead – could ex-NFL reporter Michele Tafoya win a first statewide election for Republicans in 20 years?

• Our reporters answer your questions about ICE, immigration and the midterms

As Democrats fight to regain control of the US Senate, hopes are rising in states – from Kansas to Texas – where they have not prevailed in decades. But in Minnesota, where Republicans have not won statewide election since 2006, the contest for an open Senate seat is closer than expected.

Should Peggy Flanagan – the state’s Democratic lieutenant governor – win the election, she will be the first Native American woman to serve in the US Senate. But history has not yet been made. The closely watched Cook Political Report shifted its rating on the race this week from “likely Democrat” to “lean Democrat”.