Hello, everybody. I was wondering if the highlighted part at below is grammatically correct and natural. Would you explain about that?( It is from a BBC article.) As wall discussions labour on, Mr Trump plans on sending more than 3,700 active troops to the US-Mexico border to help agents with security efforts this month. With more than 2,000 troops already at the border, the new deployment would top November's mid-term election-time numbers of 5,900. Thank you.