Here is the latest Iowa news from The Associated Press at 3:40 a.m. CST

DES MOINES, Iowa (AP) — Iowa’s top attorney wants another lawyer to defend a new law that eliminates most collective bargaining rights for public sector workers. Attorney General Tom Miller says in a letter released Tuesday that he’s received support from public-sector unions. Miller says that to avoid a potential conflict of interest, he’ll seek outside legal counsel to represent the state in a lawsuit from the American Federation of State, County and Municipal Employees Iowa Council 61.

GARNER, Iowa (AP) — Iowa’s U.S. senators were met with overflow crowds who questioned them about President Donald Trump’s action during his first month in office and other issues. Although Republican Sens. Charles Grassley and Joni Ernst held meetings Tuesday in small towns, they drew big crowds. Grassley was in northern Iowa and Ernst was in eastern Iowa. Many of the questions focused on the president, including whether Republicans would investigate whether the Trump campaign made contact with Russian officials.

BLACKSTONE, Va. (AP) — GOP U.S. Rep. David Brat, who rode the tea party wave to a historic political upset nearly three years ago, was confronted by protesters upset about the Trump administration as he held a town hall in his district. Protesters and supporters crowded a restaurant conference room Tuesday in Blackstone where Brat took questions for about hour. Some demonstrated outside the restaurant.

DES MOINES, Iowa (AP) — A union official has filed a formal complaint challenging whether a lobbyist for a national conservative organization was registered properly for the first half of the legislative session. Ken Sagar, president of the Iowa Federation of Labor, AFL-CIO, filed the complaint Tuesday against Drew Klein of Americans for Prosperity. The complaint alleges Klein violated legislative rules by lobbying for bills without registering formally as a lobbyist. Klein says the issue is a misunderstanding.