The Sensex on Monday logged its first drop in five sessions, slipping 33 points, after investors took profit and adopted a cautious line ahead of the Economic Survey and the Union budget amid weak global leads. It is due to be released on Tuesday and the budget on Wednesday. Investors across the globe were spooked after US Prez Donald Trump imposed immigration curbs that sparked criticism, adding to fears that his ‘America First’ policy may prove destabilising for the world.