Here is the latest Iowa news from The Associated Press at 3:30 a.m. CST

SIOUX CITY, Iowa (AP) — Some of the Democrats considering running for president in 2020 say they plan to ignore personal needling from President Donald Trump. Sen. Corey Booker of New Jersey tells The Associated Press that he doesn’t want to waste his time on negativity when voters want to hear a positive message. Another potential Trump opponent, Sen. Amy Klobuchar of Minnesota, says it’s a tricky challenge to stand your ground but not allow Trump to define the agenda every day.

IOWA CITY, Iowa (AP) — Investigators say they have arrested a 32-year-old man who may be linked to several sexual assaults near the University of Iowa campus. Carlos Hivento of Cedar Rapids was arrested last week and charged in the November sexual assault of a 19-year-old girl he allegedly met at an Iowa City bar. Investigators are looking into whether he’s connected to several other assault reports.

WASHINGTON (AP) — The White House is describing comments by Republican Rep. Steve King about white supremacy as “abhorrent.” Presidential press secretary Sarah Huckabee Sanders is praising the move by House Republicans to strip the nine-term Iowa lawmaker of his committee assignments. King was quoted last week by The New York Times as saying: “White nationalist, white supremacist, Western civilization _ how did that language become offensive?” Those comments were widely denounced as racist.

MUSCATINE, Iowa (AP) — A Marion man has been charged with first-degree murder in the death of a woman whose body was found last week on the side of an eastern Iowa highway. The Muscatine Journal reports 35-year-old Douglas Joseph Foster was charged Tuesday in the Jan. 8 death of 20-year-old Lea Ponce, of Fairfield. Investigators say Ponce was last seen alive just after midnight Jan. 7 getting into a pickup truck Foster was believed to have been driving.