Highlights: The Trump presidency on April 24 at 10:02 p.m. EDT

(Reuters) - Highlights for U.S. President Donald Trump's administration on Monday: WALL AND LOOMING SHUTDOWN Trump indicates an openness to delay his push to secure funds for his promised border wall with Mexico, potentially eliminating a sticking point as lawmakers worked to avoid a shutdown of the federal government. TRADE The United States will impose preliminary anti-subsidy duties averaging 20 percent on imports of Canadian softwood lumber, Commerce Secretary Wilbur Ross says, escalating a long-running trade dispute between the two neighbors. NORTH KOREA Trump says the U.N. Security Council must be prepared to impose new sanctions on North Korea as concerns mount that it may test a sixth nuclear bomb as early as Tuesday. Top Trump administration officials will hold a rare White House briefing on Wednesday for the entire Senate on the North Korean situation, senior Senate aides say. TAXES Trump's zeal to unveil a tax plan before his 100th day in office is raising questions about just how thorough his "tax reform" plans will be, amid signals his focus now is on slashing tax rates. RUSSIA INVESTIGATION The Senate's main investigation into allegations of Russian meddling in the 2016 U.S. presidential election has a much smaller staff than previous high-profile intelligence and scandal probes in Congress, which could affect its progress, according to sources and a Reuters review of public records. MAR-A-LAGO A U.S. State Department website published an article this month about President Donald Trump's Mar-a-Lago resort in Florida, stoking criticism from prominent ethics experts. SYRIA The United States blacklists 271 employees of a Syrian government agency it says was responsible for developing chemical weapons, weeks after a poison gas attack killed scores of people in a rebel-held province in Syria. HEALTHCARE A congressional vote on a Republican healthcare legislative plan may not come for weeks as leaders in the House of Representatives and the Senate continue negotiations over possible proposals, the White House says. UNITED NATIONS Trump complains the United States is shouldering an unfair burden of the cost of the United Nations, but says if the world body reforms how it operates, the investment will be worth it. (Compiled by Jonathan Oatis and Bill Trott; Editing by Grant McCool and James Dalgleish)