Count Dates From Two Different Tables

I would like to count only dates where the Close Date is less than or equal to the Target Date. Here is what I have done, but it does not work. any ideas how I might get this to work?

SELECT A.[SCA_Open Issue Tbl.ID] AS [IDCount],
A.[Criticality of Risk] AS [Criticality of Risk],
A.[Database] As [Database],
A.[Risk_assumed_without_mitigation] As [Risk Assumed WO Mitigation],
A.[OTS] As [OTS],
A.[Issue Closed Date] As [Close Date],
A.[Targeted Completion Date] As [Target Date]
FROM [EOY Closed SC&A Issues] A

UNION ALL SELECT B.[RefID] AS IDCount,
B.[complexity_desc] AS [Criticality of Risk],
B.[Database] As [Database],
0 As [Risk Assumed WO Mitigation],
B.[OTS] As [OTS],
B.[EndDate] As [Close Date],
B.[TargetEndDate] As [Target Date]
FROM [EOY Closed Risk Assessments] B

WHERE [Close Date] BETWEEN Date() <= [Target Date];