Since Feb 28, Singapore’s Immigration and Checkpoints Authority (ICA) has stepped up security checks on arriving travellers, cargo and vehicles at all of the country’s entry points due to a heightened global security situation.    KUALA LUMPUR:  Travellers heading into Johor from Singapore via the land checkpoints may soon face delays as Malaysia seeks to adjust its border management control in a bid to align with the Republic’s tightened security checks.  Since Feb 28, Singapore’s Immigration